In the WSOP the dealer reached over to that one chick's cards when she was already all in and they ruled her cards mucked. If that wasn't a time for fairness I don't know what is.
I stand by my rule. Keep your mouth shut. If I lose a hand because I muck my hand (and I HAVE before), so be it. If I lose a pot because someone chimes in when something like this happens I'd be pissed. Keep it to yourself.
1 - Absolutely that was a time for fairness, and that's
why the floor was called over. The problem there was that the cards couldn't be positively identified - when the floor looked at them they weren't the cards the player claimed they should have been. At that point there's really nothing that can be done, fair or otherwise.
2 - Zorba has it. What Grossberger and I are saying is that once a hand has gone to showdown and the cards have been turned over, if a mistake is about to happen you're obliged to say something.
If the hand
hasn't gone to showdown, or it has, one player has shown their hand and the other just mucks then absolutely keep your mouth shut because you can't know there's a mistake in progress.
Note too that OP is talking about a tournament,
not a cash game. Tournament rules typically require all
hands to be turned face up at showdown which is one of the main reasons I'd have wanted to prevent Player A from mucking her cards - they're supposed to be turned over anyway
and Player B is playing the board. Cash games don't usually have that rule and the situation would be treated differently.