Tournament Ruling: You make the call

[SossMan]

Two players see a flop. Let's say SB vs. BB for ease of explination (it doesn't matter).

There was a raise preflop to, say, 200 by the BB and it was called by the SB (after he open limped).

On the flop is A [img]/images/graemlins/club.gif[/img]2 [img]/images/graemlins/diamond.gif[/img]7 [img]/images/graemlins/diamond.gif[/img]

SB has t875 behind.
BB has around t1400 behind.

SB checks
BB grabs a bunch of chips from a mixed stack of t25's and t100's and plops them out as a bet. Dealer isn't asked for and doesn't offer up a count of how many chips the bet is. SB thinks for a bit and says (I'll try to get this exact):

"Let's do it"
Exposes his hand (Qd8d for flush draw)
then grabs all his chips and puts them in front of him (past the betting line)

BB doesn't do anything except ask for a count. It comes to 875 and then they count his initial bet and it comes out to 700, so there is still t175 worth of 'action'.
BB claims that SB's hand is dead and wants a ruling.

That is exactly what happened and was explained to the floor by the dealer perfectly and there was no dispute over the facts of the action.

What is the correct ruling? (note that everyone knew that SB assumed that the bet covered him and his intent was not to shoot an angle for the remaining t175)

The floor is very experienced (has worked the WSOP before) and made what I thought was a surprising ruling.