2/4, i turn trips and he goes ballistic?

[B&O99]

Villain is 37/20/1.77 over like 160 hands or so. He's not very good and has not really got out of line. He has been calling alot of my raises and mostly just folding to my c-bets. The rest of the time he has just called down and not folded (he did raise once or twice and i folded my crap then). The only time he has shown this much aggresion was when he 5-bet a/i with AA preflop vs a regular earlier and showed when the reg folded. Easy fold?

PokerStars No-Limit Hold'em, $4 BB (6 handed) internettexasholdem.com

BB ($400)
UTG ($442.25)
MP ($495.50)
CO ($431)
Hero ($827.60)
SB ($550.10)

Preflop: Hero is Button with T[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img].
UTG calls $4, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $20</font>, SB calls $18, <font color="#666666">1 fold</font>, UTG calls $16.

Flop: ($64) 8[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, UTG checks, <font color="#CC3333">Hero bets $44</font>, SB calls $44, UTG folds.

Turn: ($152) T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $486.1 (All-In)</font>, Hero ???