this is one of those low limit NL hands.. that MP flat call kind of scares me but also makes me think that if you call and the turn is a blank, no spade, his reaction then is truly how you can guage your opponents supposed "flush draw". he could have spiked top set and even in a three way pot if he is positive someone is on a flush draw and both players have their money in the middle he has odds to call and hope for the board to pair or hit the case Q.

im probably calling the flop bet with all the money in the middle its really making it tough on you to fold here.. the turn is a non spade, if its checked around to me im pushing, if theres action before you.. im not so sure about it.. but i dont think folding on the flop is correct either because you dont have enough information to justify a fold unless you have good information on both of those players and are sure you're beat.