For being too mean to Jarom. CBers were saying he was over the top and went out of his way to make fun of Jarom.
The next time he came on the show (he had a weekly segment) he said that he heard Cougarboard was coming after him for being mean. So he clarified that he was just teasing Jarom and that they're friends, etc.
Ever since then he's made side comments about Cougarboard, kind of as an ode to BYU fandom