Pretty sure they don't know anything besides the "bullying" and sister posting. Probably just got tired of hearing him scream murder and rape threats in his room. They're clearly not doing enough to keep him contained since he keeps quietly coming back every few days or so, so I doubt they really give a shit.
I wouldn't believe a word Alex has to say on the matter. There's no shot in hell his parents, after seeing the contents of his OP, don't just rip the cable right out of the wall and have him interred in the nearest psych ward. If he tells them anything it's going to be very watered down and generous to himself. While we have seen the mother of a certain zoophile on here (whose name escapes me at the moment) run interference for her son with full knowledge of what he was into, Alex's parents seem well-adjusted enough with what we have here to lead me to believe they would not stand to have him indulge. 0% chance they let him keep jerking off to dogs and amputee children.
He started to, he's no longer an infant, he's just never going to reach adulthood.
Come to think of it, that's actually the first thing I thought of when I clicked the new Flash animation and saw this character for the first time in years.
