Son, the reason you lasted 15 seconds was that he wanted you to last 15 seconds. Get that through your head.
Look, I've avoided posting on your threads, because it would always sound something like this, and I wasn't sure if there was enough evidence before, but now, you've really left little to no doubt whatsoever.
You're a child. Grow the hell up.
Like JKS, I've been reading pretty well all of your posts and threads… and frankly, you have some major issues with your ego and deep seated insecurities. You always want to seem strong, powerful, cool, whatever, but are also always scared that you're not being seen that way. This is then combined with a real entitlement attitude, where you expect everything to always cater for you, and you alone, regardless of anyone else or anyone else's needs. That needs to go immediately. You're not special. You're not even good. You frankly deserve nothing, as you've earned nothing (in terms of accommodation, respect, or similar).
Your behaviour is deplorable, and the fact that you come here to discuss it (seemingly to seek approval and some kind of validation that you were in the right… you weren't) is both immature, and downright stupid. Let's say one of your "sparring fights" leads to someone wanting to press charges against you… there's now a hell of a lot of evidence of your behaviour and attitudes right here… in your own words. Do you really think any prosecutor worth anything won't use these against you? And no, a pseudonym online won't stop anything… someone has already figured out who you are, where you train, and contacted your instructor. Simply from a legal standpoint, you've shot yourself in the foot.
You've had threads about how you don't like the rules of your school… you don't like the rules on who can spar, and who can't, to the point that you whined to your instructor getting them to make an exception for you… then spat in his face by having so little control you injured another (younger, smaller) student. You've complained that you can't wear your own customised uniform (without sleeves, as you wanted to "show off your arms"… dude, get over yourself… your arms aren't really impressive at all, son), because again you wanted to be special and show off what you think is a good feature. You're not special. You're not even good.
Now we've gotten to this point… where things have come to the attention of your instructor. Quite simply, he wasn't happy having his name dragged through the mud by having you associated with him, and set about to teach you a lesson (honestly, I'm not going to call it harsh, as it wasn't from my perspective) by firstly putting you in the position of your victims (and yes, that's what they were), and giving you a taste of what they felt like. This was followed by asking if you understood (apparently, you didn't), and giving you an alternate way to deal with someone who says something you didn't like… which you didn't grasp either. In the end, you're damn lucky to not simply be kicked out of the school (it would certainly be what I would have done)… and you're going to be watched very closely from now on… one step out of line, and you're out, I'd suggest.
But the problem is, you still don't get it. You still don't see what you were taught, and you still don't see what you've been told here since you began. Your entire first post is you basically looking for us to tell you it's alright, you've taken your lumps and it's all good now (it's not), or that your teacher was wrong in how they dealt with you (he wasn't), or that you were good and impressive for lasting like you did (you weren't)… combined with a range of comments that show that you were unable to actually follow what happened, or have the humility to see the error of your ways.
I'm going to go through your original post, and highlight the problems in your comments… as they are indications of exactly what your problems are:
So apparently an anonymous caller told him about "how I beat up a middle aged man who is out of shape." This led to a long talk about fighting and he asked me honestly is this a habit of mine.
I told him about the other two incidents and he told me to take off the top of my gi and give it back to him. Since he doesnt want the dojos emblem to be associated with me.
I tried to make my own case and explain to him but he just wouldn't hear it. He didn't even let me finish talking so I tried talking over him to get a word in and that just annoyed him.
So, he tried to talk to you about it, and you wouldn't do him the basic courtesy of listening to him… you, by your own admission, "tried talking over him". Dude. You're a student of mine, and you try that, you find out very quickly that it's one of the worst things you could attempt.
So he said if you want it back, spar me for it. Obviously I was reluctant to do that because he is better than I am, I foolishly agreed to it. It turned out pretty bad for me, I got lots of bruises on my body and eventually I balled up when I got tossed to the floor to try and stop his strikes.
You do get that you wouldn't have been beaten up by him if you'd simply listened to what he was saying in the first place, yeah? It wasn't his intention to fight you, it was his intention to get you to think about your behaviour, and take the opportunity to correct it… but you didn't allow that (talking over the top of him). That's why he then took it to sparring… it's seemingly the only language you understand.
He kept telling me "You don't like that do you?" I tried to roll onto my feet and as soon as I did it was back to the floor again. I gassed out, I was angry and spent, I wanted to fight back, I wanted to hurt him because he pissed me off. No matter what I did though nothing worked, it was like drowning.
He's your teacher. He's teaching you. And you wanted to hurt him? Not because he hurt you, but because he pissed you off?!?! Dude, get out of his school right now. You don't deserve him, and he sure as hell doesn't deserve you.
Nothing I did made it any better and just made it worse on myself. Finally he stopped, and he asked me "Was that a fair fight?" I told him "no it wasn't" he said "oh really!? Why isn't it fair?"
I said "because you're a better fighter." He said "so if you don't like that why are you doing that to other people, when you should know better than that?" I didn't know what to say. So he shouted again, "why are you picking fights with people weaker than you?"
I explained to him I didn't do that, then he said "ok, call me a chicken, call me some names and see what I'll do." I did and he said "So what. I don't care. See how easy that is?" Then he got close to me and said "Words do nothing, honor and pride are things you don't understand, things you shouldn't bother with. Right now all they are going to do is get you killed."
Despite your protestations ("I didn't know that I'd win"), you have universally picked people that you know you can manhandle fairly easily… you've expressed that much. So yes, you are picking fights with people "weaker" than you (or less skilled, more out of shape, whatever).
And, do you get what lesson he was trying to give you with his last advice there? Really?
I nodded. He told me that if I wish to continue I can never get in fights again unless my life depends on it. No sparring with idiots at the gym or in its parking lot, and no fights with relatives or anyone.
Did you nod because you understood, or in order to simply stop the lecture?
When he feels I am more mature as he put it, he will give me back the gi jacket. Until then I have to either use just a t shirt or my old gi, but hey at least on the bright side my old gi has no sleeves and looks awesome.
You're a child. The "bright side" here is that you weren't summarily dismissed from the school (I've seen that happen for far less than your transgressions, son). Wearing your little kids uniform with it's "extra-tuff" sleeveless look, especially when that exact look was not allowed previously, is just you ignoring what actually happened. So yes, you really do need to grow up and become a hell of a lot more mature. I mean, you're 27, dude. Stop acting like a 14 year old.
I am honestly thankful I am still allowed to go back after all that. That was pretty scary and I've never experienced something like that before. It was pretty embarrassing too, luckily though he did it on a day only a couple of people showed up to class.
And, again, you're simply focused on how you looked… "lucky there were only a couple of people there"… It's good that you got scared… you should be… but you also need to take the lessons as given to heart… as you've missed them entirely. Do you even get what empathy is?
Frankly, kid, despite my signature, you get no respect from me. You show no respect to anyone else, from your girlfriend to your instructor, to anyone else. My advice would be to leave the school as gracefully as you can, thank your instructor for opening your eyes to your behaviour, and take some real time off to come to terms with just how much of a bully and a jerk you've been to everyone. Martial arts are not your life… feeling powerful and strong is what you're after due to some pretty deep-set insecurities and self esteem issues. That's not what the martial arts are for, or about. Your "obsessive" training regime is not anything to do with you being dedicated to martial arts, it's about you running scared from feelings of inadequacy.
Leave the martial arts, at least until you grow up, and seek some therapy. You need it.