Joe,
I agree with you 100%. This particular student had all the skills necessary to successfully defeat the scenario; he just kept stopping here and there when things didn't go exactly as they should have, instead of continuing to fight on and finish his assailant. Several times when I was his partner, he would stop and apologize when he thought he had struck me too hard or hadn't performed certain techniques exactly as I had demonstrated them.
So, we had an extensive debrief after that training session and have continued discussions since. Long story made short:
Last night, while we were working a rather enthusiastic skill development drill, he popped me pretty good. He stopped, backed off and apologized. I told him that, from now on, everytime he stopped in the middle of a drill or exercise to apologize or ask questions (I love to answer questions...just not in the middle of an exercise!) I was going to kick him in the groin.
Sure enough, it wasn't long before he did it again and I made good on my promise. Everybody got a good laugh out of it (I didn't kick him hard; just a love tap!) and we were able to continue the exercise with a minimum of interruptions.
I know you can't do that with everybody, but he's trained with me for a couple of years now and he really knows better. I am going to break the scenario down into more easily digested portions next week before we go all out.
I greatly appreciate all the great input that everybody has provided in this thread; it has really made me analyze the skills and methods I've used to teach folks how to successfully survive these type of scenarios.
Thanks!