[jfez]

The intent of the rule is to prevent chip dumping in which a player would muck a BETTER hand to someone during an all-in. Otherwise someone could hold their cards unseen, wait for the dealer to deal the entire board, and then muck a winner in order to dump chips.

also the player was a total douche for trying to claim he tabled his cards.

One cannot determine what is a chip dump and what is a badly timed steal; and that is not the point of the rule