set in middle of tourney

Not exactly sure what the best move is here. If i raise half my stack here I'm committed anyway..what the best move in this situation

Game No : 3152625453
***** Hand History for Game 3152625453 *****
NL Texas Hold'em Trny:18026435 Level:8 Blinds (150/300) - Tuesday, December 06, 00:18:45 EDT 2005
Table $40K Guaranteed(531093) Table #8 (Real Money)
Seat 1 is the button
Total number of players : 9
Seat 1: Scarface33C ( $4615 )
Seat 3: WISCONSINXL ( $3165 )
Seat 4: fanuccii ( $2258 )
Seat 7: automatonz ( $8377 )
Seat 8: jsikora ( $2435 )
Seat 10: Sparta007 ( $4697 )
Seat 2: biglar77 ( $4625 )
Seat 5: CHIPBERNER ( $14191 )
Seat 6: kykevin28 ( $11354 )
Trny:18026435 Level:8
Blinds (150/300)
** Dealing down cards **
Dealt to Scarface33C [ 9s 9c ]
fanuccii folds.
CHIPBERNER folds.
kykevin28 folds.
automatonz folds.
jsikora folds.
Sparta007 raises [600].
Scarface33C calls [600].
biglar77 folds.
WISCONSINXL folds.
** Dealing Flop ** [ 9d, 6h, Jd ]
Sparta007 bets [900].
Scarface33C is all-In [4015]
CHIPBERNER: go
CHIPBERNER: do it
Sparta007 folds.
Scarface33C does not show cards.
Scarface33C wins 6565 chips