I think they actually went easy on them. They could have spent more time picking their silly dorctrines appart instead of doing that closet bit. I mean, it was funny, but they could have spent this time ripping on Hubbard and his followers some more.
Still, I think this is officially the best line in the history of TV:
We have an important update. Tom Cruise, John Travolta and R Kelly all just came out of the closet!
They are so getting sued for this. Was that a challenge at the end of the episode? Are they really taunting the church scientology? I love how the end credits are John Smith. :P