$5.50 NLHE STT: 5 BB left with A9o. I'm BB and the BTN raises 2x

[nabmom]

Blinds are 150/300 with 25 antes. I'm down to 5BB and figure this is an easy shove when the big stack at the table makes a 2x raise.

Is this a no-brainer? I certainly didn't pay any attention to my brain when I shoved! But can't see any other choice with being this short-stacked, still 5 players left, and an A high hand facing an open from late position.

Does the following make a difference at this point:

Villain stats are 49/10 over 41 hands. He's had 3 opportunities to steal so far this game and hasn't done so yet. He's only raised 4 times during the entire SnG.

Merge - $5+$0.50|<> NL - Holdem - 5 players
Hand converted by PokerTracker 4

BTN: 4,848.00
SB: 2,446.00
Hero (BB): 1,509.00
UTG: 2,497.00
CO: 2,200.00

BTN posts ante 25.00, SB posts ante 25.00, Hero posts ante 25.00, UTG posts ante 25.00, CO posts ante 25.00, SB posts SB 150.00, Hero posts BB 300.00

Pre Flop: (pot: 575.00) Hero has 9♣ A♠

fold, fold, BTN raises to 600.00, fold, Hero raises to 1,484.00 and is all-in, BTN calls 884.00

Flop: (3243.00, 2 players) 2♦ K♠ T♥

Turn: (3243.00, 2 players) 6♣

River: (3243.00, 2 players) J♠

 

[BlueNowhere]

Just sigh and shove. I've seen too many people do this with random stuff like A5o.