Well thats the only reason why he would have been told to hit the road. Having been to 43 and I go back as often as I can, I know that that would be the only reason why he didnt make it. If he had to fly with other instructors to get their opinion then he obviously was that good. No use making excuses for him. We cant all be good at everything, im sure he will find his calling somewhere else and the aviation industry will rejoice when he does.