[GimmeDaWatch]

This looks fine. How on earth are you going to play it any differently with the other players so shortstacked and HeeHaw in there calling down to boot. It looks like there's a decent chance somebody's got you, but I think saying its "impossible" that youre ahead is a bit much, the board is so draw heavy and the pot big enough mulit-way that they could be calling allin w/two pair/pair and draw, str8 and flush draw etc, although most of those hands should raise the flop given stack sizes.