I'm only getting it second hand from Bill's confessional but Crystal not voting for Carmine and a 2-2-2, and instead voting Bobfather for the 3-2-1 that bounced Paulie... was apparently intentional because she thought Paulie and Viola were too close. If she'd simply voted for Paulie herself, then Bobfather wouldn't have needed to idol, so it was a smartly placed vote to get the outcome she desired. But was it a good move?