Straight draw turns into bottom set, heavy action

[DrewOnTilt]

I started out this hand in decent shape with an open ended straight draw and backdoor weak flush draw, but then the turn action got heavy when the turn card gave me bottom set but put a possible straight on the board.

http://www.pokerhand.org/index.php?p...mp;hand=193906

I called the turn pot raise since kio878 didn't shove allin, and I was getting just over 3:1 on the call.

Should I have just dumped this on the turn given that I was drawing to an underfull or to a chop if a nonspade ace rivers? How likely is it that the cards I need to fill up are out in my opponent's hands, given the way the hand went down?