You make the call

[RegBarclay]

1/2 NL game three players in the pot. We are on the river, there is around $70 in the pot with three players in. The board reads A-8-6-6-3 (suits not important).
Player A baets $30, player B calls and player C raises to $70, player A calls and while B is thinking, C reveals his hand thinking the action is complete. He immediately realises his mistake and turns them face down.
Floor is called and the dealer explains him the situation. Player B who did not see the cards wants to see them now but floor rules that he may not, as he has only $40 left he is closing the action and player A did not have the extra information either when making the call.
So far a very good decission by the floor in my opinion, but now comes the hard part. Player A tells B: "you can fold, he has J-6" and one other player at the table confirms this. Player B now mucks his 6-2 face up.
Showdown: C has J-8, not J-6 and A shows A-T.
Who gets the pot and why?