($12) I'm not going broke with TPTK. Yeah, right...

[Pocketbear]

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t25/t50
9 players
Converter

Stack sizes:
UTG: t1530
UTG+1: t1455
MP1: t1550
MP2: t1525
MP3: t1420
CO: t1140
Button: t2070
Hero: t1280
BB: t1530

Pre-flop: (9 players) Hero is SB with J[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/spade.gif[/img]
3 folds, MP2 calls t50 <font color="aaaaaa">(pot was t75)</font>, 3 folds, Hero calls t25 <font color="aaaaaa">(pot was t125)</font>, BB checks.

Flop: 5[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/heart.gif[/img] (t150, 3 players)
<font color="#cc0000">Hero bets t100</font>, BB folds, MP2 calls t100 <font color="aaaaaa">(pot was t250)</font>.

Turn: 7[img]/images/graemlins/heart.gif[/img] (t350, 2 players)
<font color="#cc0000">Hero bets t200</font>, <font color="#cc0000">MP2 raises to t400</font>, Hero calls t200 <font color="aaaaaa">(pot was t950)</font>.

River: 8[img]/images/graemlins/diamond.gif[/img] (t1150, 2 players)
Hero checks, <font color="#cc0000">MP2 is all-in t975</font>, <font color="#cc0000">Hero calls all-in t730</font>.

No reads on the villain. When he minraised me on the turn I've got completely lost... A set? Weird two pair? Can I really fold here having invested 40% of my stack already?

What would be your line? Check/call the turn for pot control reasons or what?