[CORed]

The dealers and floor people here are better qualified to answer than I, but I believe that since significant action occurred, it's too late to replace the card. I'm not sure whether it's a misdeal, or the hand with the exposed card is dead. The dealer should have burned the exposed card and replaced it before betting started, but apparently didn't notice in time.

It shouldn't IMO, matter whether the care bounced off chips or the players hand. It is an accidentally exposed card and should be treated as such. If the player deliberately exposed the card it would, of course be his responsibility, but a pitched card bouncing off a player's hand happens fairly often, and I've never seen it treated any differently that when the card just happens to flip because the dealer pitched it wrong.