From an interview on AVClub.com dated January 4th, 2006:
AVC: There’s some pretty harsh satire on South Park. They don’t really care who they offend.
IH: But that’s their thing! They’re success was built on that cutting-edge stuff. I’ve had to defend them a lot of times. One time on BET Tonight I defended them because Tavis Smiley, the host on that show, was coming at me. It was a call-in show, too, so people were calling in. I told them not to take this stuff seriously. If you do, you’ll get in trouble. Just enjoy it. Remember your high-school yearbook? You look at those pictures now, you laugh, right? That’s what South Park is. You got to laugh at it. Because we cursed, but we just didn’t dare let the principals, the teachers, or the preachers hear it. And we didn’t turn out bad, okay? Just look at it that way. Also, usually there’s some kind of moral message at the end for the kids, by the Chef.
AVC: They did just do an episode that made fun of your religion, Scientology. Did that bother you?
IH: Well, I talked to Matt and Trey about that. They didn’t let me know until it was done. I said, “Guys, you have it all wrong. We’re not like that. I know that’s your thing, but get your information correct, because somebody might believe that shit, you know?” But I understand what they’re doing. I told them to take a couple of Scientology courses, and understand what we do. [Laughs.]
Um…so two months later he acts like this? Was it a slow burn of anger? Was it the fact season 10 is about to start? Was it the fact that Scientology told him to cut his ties with them? Who knows. All I know is, he looks like a bigger fool the more I hear about this.