PS $11...down to 11, could I have folded this?

Pokerstars...down to 11 players....my stack was quickly dwindling...could I have let this go and waited? My read on the button was that he could be pushed off hands..I hadn't had a hand in a while and I had only picked up chips coming over the top of his positional raises on me. So i saw this bet as possibly being a steal attempt that I couldn't come over the top of...

PokerStars No-Limit Hold'em Tourney, Big Blind is t4000 (6 handed) converter

Button (t49708)
SB (t249684)
Hero (t39852)
UTG (t127087)
MP (t34916)
CO (t49016)

Preflop: Hero is BB with J[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, CO calls t4000, <font color="#CC3333">Button raises to t49508</font>, <font color="#666666">1 fold</font>, Hero calls t35652 (All-In), CO folds.

Flop: (t90160) 8[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Turn: (t90160) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

River: (t90160) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: t90160