So the response to Update #14 has come fast and rich. You can read that piece in full here, or just roll with this nut graf, woven from Winnicott and Orbach:
Some people might be getting hurt in yoga because they are practicing in the bodies they fantasize about, instead of the bodies they actually have. Bodies they fantasize expressing a happiness that is not truly there. Bodies they fantasize as expansive when they actually feel like retreating, or expressive when they feel choked. What happens to the tissues when the mind presses them into the performance of a fictional suppleness and strength? Can the fantasized body push the real body, the inner body, too far, too fast?