I saw TJ Cloutier play this hand today

[gaylord focker]

10-20 NL at the Commerce. I was waiting for a seat watching the game. Folded to T.J in MP and he opens for 120. The button calls as well as the BB. T.J has about 1000 and the other two have him covered.

Flop: 10 [img]/images/graemlins/spade.gif[/img] 10 [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/heart.gif[/img]

Checked to T.J, he bets 200, button folds SB calls.

Turn:K [img]/images/graemlins/club.gif[/img]

Checked to T.J, and he checks behind.

River: 7 [img]/images/graemlins/diamond.gif[/img]

BB bets 500 and T.J quickly calls.

BB has 10 9 offsuit for a flopped full house. TJ has A [img]/images/graemlins/club.gif[/img]10 [img]/images/graemlins/club.gif[/img]. I thought this hand was very strange. Being short stacked, with only about 6 hundred left by the turn, why would he not put the rest of his chips in? There are plenty of straight draws on the board, and lots of possible worse hands he could be called with. Was he trying to induce a bluff on the river? Or was he afraid the king made the BB's hand? Either way, it's clear with only six hundred left he is going with this hand, and I was shocked he didn't put the rest of his money in on the turn. Any thoughts?