[bav]

I hate Chief's and Ellen's answers... no the hands are not dead because they didn't notice a raise and neither did the dealer. The guy who put the raise in would be in angle-city if you allowed that; a player can just silently wait for the flop and a few bets and then suddenly proclaim "your hands are all dead--my pot because you failed to call my raise pre-flop". Nope.

I'm ok with having the player who didn't get called extract his raise, or having the two players who hadn't called correct their action. Since the players were all amenable to "take back the uncalled raise", that's good. I think I would tend toward requiring the guys who failed to call put the last bets in, though, if there were no consensus.