[elindauer]

I think it's fine. There are what, two cards left in the deck that your opponent can hold, and he has at best one out? Show a little weakness. Maybe he'll catch a gutshot and make a straight or something. Your check behind his PF 3-bet doesn't look too suspicious, IMO. Now when you raise the turn, he might think you're bluffing him because of his flop check... you could get all kinds of action out of somebody with nothing.

my 2 cents.