Also, one would think, if that were the situation, he would be very resentful and controlling of Shawn's friendship with the other kid in the apartment complex.
What I am more fascinated with is the lengths to which some people will go to try to avoid the most obvious conclusion. And, certainly, to an extent it is a good thing that people think outside the box. I would love to think these boys didn't undergo any significant trauma, other than to be collected as a "buddy." And it is true that there has been no official confirmation that the boys were physically or sexually abused. That said, this theory is pretty off the wall.
I am struck that the poster didn't merely pose it as a theory, either. He or She presented it as if he/she were certain that is what happened. If this weren't such a serious issue, I would be amused by all "sport" being made of this by other people. I've often heard Rush say everyone wants to be the smartest person in the room, so they come up with obscure predictions to set themselves apart from the crowd.