NLTRN 33 - Should I protect my hand at the turn?

[ratone]

Villain had called my cbets twice. one time he had A2 on an A high flop, and checked both turn and river uninproved, the other time I checked turn, he bet the river and i folded.
I checked turn behind to call most river, but this river just sux. should i call it anyway? or should i bet turn?
Full Tilt Poker
No Limit Holdem Tournament
Blinds: t20/t40
2 players
Converter

Stack sizes:
hero: t1590
BB: t1410

Pre-flop: (2 players) hero is SB with 5[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/diamond.gif[/img]
<font color="#cc0000">hero raises to t100</font>, BB calls t60 <font color="aaaaaa">(pot was t120)</font>.

Flop: 2[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img] (t200, 2 players)
BB checks, <font color="#cc0000">hero bets t100</font>, BB calls t100 <font color="aaaaaa">(pot was t300)</font>.

Turn: 6[img]/images/graemlins/spade.gif[/img] (t400, 2 players)
BB checks, hero checks.

River: J[img]/images/graemlins/club.gif[/img] (t400, 2 players)
<font color="#cc0000">BB bets t400</font>, hero folds.
Uncalled bets: t400 returned to BB.

Results:
Final pot: t400