Yeah, I just saw it. I agree with the Atheist. That stuff can happen to anybody. And the mentally challenged son was an excellent role. He seemed to have a bit of a Joker feeling to him.
That being said, I did feel there were some problems to the movie. The pacing was slow and it seemed to lack the sort of pop that a movie like American Beauty has. I enjoyed it and would enjoy seeing it again, but it isn't the type of movie I would recommend to many.