Seriously I'm back to trying to figure out what Z would do. Not that I'm very good at that. This makes (surprise, surprise) RB my main suspect.
First I think Z might have gone with Cat's turn choice, and I'm pretty sure with all Cat's buttkissing and defending, RB was that choice.
I also think Z could of taken DD up on her comment to make it RB and don't tell anybody. I would do something like that it would amuse me to no end.
Last off RB seemed to be bucking for a sidekick (minion):
but let the new one have a free turn right away
Course I was out to lunch on RB on the first day.
Another possability is Cap
"the king is dead, long live the king" or in the words of Ric Flair "to be the man, you got to beat the man"
Cap put the nail in Cat's coffin, it would almost be poetic to pass the evil mantle to him.
The third possability is pick a veteran with no or few votes on day 1 like JL or Plant. Best of both world's an experinced player who is not suspected. Certainly increases the odds of getting to day 3.