Brad,
We're all certainly entitled to our opinions. I would like to comment on a few things. As I said before, it seems to me, that you're basing judgement on the success of this defense only on what you have seen. Please keep in mind, that just because you have not had success with this defense, does not mean that there are others out there who have successfully defended against this attack.
I'd like to ask you this...why do we bother to train at all? I mean, if we stop and think about it, the same reasoning you're using for the bearhug, can be said of pretty much any attack and defense on our part. I could train until I'm blue in the face against a double leg takedown, but going up against someone like Randy Couture, chances are, I'd end up on the ground pretty fast. Does this mean that I should give up training against that type of attack? Of course not, for the simple reason that everyone we may face, is not going to be a trained fighter. Yes, we should always gear our training to be the best we can be, but again, if faced with a knife, the person may not be a Filipino Master. Everyone throwing a punch is not going to be Mike Tyson Jr. In the bearhug scenario, we're 'assuming' that the person is going to be bigger, stronger and capable of lifting and throwing us. This may not always be the case.
As for the defenses listed...we need to keep in mind, that like any technique in the system we study, they should not be something set in stone, something that we have to do step by step. Instead, we should be using these techniques as a foundation to provide us with ideas and ultimately, something that we use to come up with a reaction to the situation being presented to us at that given time.
I wish you the best in your training.
Mike