($11) Lvl II: Flopped Straight vs. 3 Diamond Board

I had a lot of trouble deciding what to do on this hand. I was looking at it almost strictly from an odds point of view. I put an opponent on a diamond draw semi-bluff, and thinking I was already ahead, thought getting 1.6 to 1 was not bad.

Is this an situation where Villain went all in an autofold for me? If so, can't Villain exploit that by going all in in the future any time there is a coordinated board?

Villain was bordline loose/tight and not aggressive up to that point.

PokerStars No-Limit Hold'em Tourney, Big Blind is t30 (8 handed) converter

BB (Villain) (t880)
UTG (t2605)
UTG+1 (t1775)
MP1 (t1840)
MP2 (t1155)
Hero (t1980)
Button (t1175)
SB (t2090)

Preflop: Hero is CO with 9[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/club.gif[/img].
<font color="#666666">4 folds</font>, Hero calls t30, <font color="#666666">2 folds</font>, BB (Villain) checks.

Flop: (t75) J[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Villain bets t90</font>, <font color="#CC3333">Hero raises to t180</font>, <font color="#CC3333">Villain raises to t850</font>, Hero calls t670.

Turn: (t1775) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>

River: (t1775) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: t1775

Villain had K [img]/images/graemlins/diamond.gif[/img]T [img]/images/graemlins/diamond.gif[/img]. I actually just noticed Villain had an OESFD as well. I still have the question: if you've flopped a straight on a one suited flop and Villain comes over the top is this an autofold or is there more to it?