He goes on to quote Hayes defending the show--including the Scientology episode specifically--on The Onion's AV Club:
Isaac Hayes did not quit "South Park." My sources say that someone quit it for him.
I can tell you that Hayes is in no position to have quit anything. Contrary to news reports, the great writer, singer and musician suffered a stroke on Jan. 17. At the time it was said that he was hospitalized and suffering from exhaustion.
AV Club: They did just do an episode that made fun of your religion, Scientology. Did that bother you?
Hayes: Well, I talked to Matt [Stone] and Trey [Parker] 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 [expletive], 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.]
If Friedman is right, this wouldn't be the first time that Scientology spoke inaccurately on behalf of a member.
UPDATE (March 22, 2006): Next week's new episode is titled "The Return of Chef."