bad read

[dark-o]

in the TOURNAMENT three players left. short stuck go all-in, and the chip leader pay. after the board is dealt dealer denounce chip leader a winner. short stuch is uot of game and goes to cashier to take his price for 3th place. after 5 minutes, he comes to dealer and say that he just remember that the pot should be split. after minute all three players agree that it should be split pot(they call to mind what was the cards), but it was to late to return to game. what should floor do when these happens? the dealer and players misread cards.