Well...think of it this way: he can't unlearn all of that so if it ever does start to become an issue again, those concepts about boundaries will pop up in his head. He won't ever be able to say, "it just happened", right?
Sounds like he needs to feel like he has some tools to deal with the boundary issues anyway. Can you imagine feeling so powerless that you are able to have anyone come up and turn you upside-down and KEEP you there?
