Paula Abdul accidentally critiqued two songs by contestant Jason Castro on Tuesday's show, but Idol producer Nigel Lythgoe says the show's real flake is Simon Cowell.

"There's no one more ditzy than Simon!" he told Usmagazine.com Thursday at the BAFTA Comedy Awards in L.A. "Or more ass-y than Simon when he wants to be. Depends on the night."

Meanwhile, Idol executive producer Cecile Frot-Coutaz says Abdul isn't going anywhere after her on-air
gaffe Tuesday.

"Why would we get rid of Paula?" she said to the Associated Press.

"It wasn't her fault" producers decided to change the judging format, Frot-Coutaz added.

With Abdul sticking around, that means there will surely be more banter between her and Cowell.

"Simon and Paula love each other," Lythgoe told Us Weekly. "[This week], for some reason, they hate each other's guts! We don't know why they're as dysfunctional as they are."