Not a Complete Vegas Trip Report (but LONG)

[ QUOTE ]
Additionally, two pots were awarded by players showing only one card, which I did not think was permissible. I saw no floor rulings.

[/ QUOTE ]

Actually I am willing to bet that what happened here was that the other players on showdown mucked there cards when the player showed his one card. In that case the pot gets pushed to the only player with cards regardless of whether he shows or not.