Info from lplive.net (I fixed Chester's quote)
On 'Pushing Me Away', Mike made a mistake on the keyboard in the pre-chorus (the sacrifice... ) and when he started to play again, he played it with a slower tempo. Chester stopped singing and said, "You bastard, oh you.. no, that's fine, you guys want it a little slower?", so they played the song over again.
Listen to the PMA sample with the 'you bastard' part HERE or download the third part of the Kevin and Bean Breakfast show (lower quality), including the interview and the whole Pushing Me Away performance HERE.