Last time when they couldn't pool their money, were they able to afford to buy more than one thing? my guess is neither Randy nor Suzie sent Bob to Exile as that would be 3 items purchased. way too much for 500 buck limit auction.Last time when they couldn't pool their money, when they sent someone to exile they got to take that person's money. That's how Natalie was able to buy the chocolate cake to share with some other people, stickboy hadn't spent any yet, so she got a whole nother $500. (An interesting thing about that non-pooling auction was that it apparently was legal to sell part of your item, ala Erik and the chocolate icing.)
So I'd say it is MORE likely Randy or Susie exiled Bob, since each of them seem to have won at least two bids. (It's probably just coincidence that we see Randy with the sharable/saleable baked goods.)
Note that if Bob goes to exile again, it becomes moot whether Charlie told Corinne or Randy about the fake idol Bob made last week, or whether Bob merely told Charlie about it or actually showed it to him. If Bob is exiled again, he can just come back saying, OK, I thought about the clues some more, and this time I went straight to it.
