Anarax
Master Black Belt
I'm sorry for your unpleasant experience. Bad training partners that bring their ego onto the mat are annoying to work with. I'm sure his ego was bruised that someone was controlling him and submitted him twice.
That's the main concern, he could seriously hurt someone less experienced. Martial arts is a great way for people to learn control and self-discipline. However, they can't be allowed to injure people in training until they develop self-control. I think the coach should warn him about his behavior and consider throwing him out of the school if that pattern of behavior persists.
if he was against an inexperienced or smaller or younger person and he lost it he could've seriously hurt someone.
That's the main concern, he could seriously hurt someone less experienced. Martial arts is a great way for people to learn control and self-discipline. However, they can't be allowed to injure people in training until they develop self-control. I think the coach should warn him about his behavior and consider throwing him out of the school if that pattern of behavior persists.