I will have to try the head against the window technique to see if I am missing something. I don't think I will do it with my son as I don't want him to try it, nor with the instructor as I don't want him to think I am bonkers.
Is it possible that you touch down in a crab and he is trying to think of creative ways to help you line up? Mandating the head against the window seems like an odd way to compensate but there is a lot I don't know.