$20 PS NL Tourney - that hand that hurts

[Capone1]

Here's the hand that sent me out 16 places out of the money right before. Question is should i pushed all in preflop for the chance that he wouldve folded.
PokerStars Game #964123032: Tournament #3919686, Hold'em No Limit - Level IX (300/600) - 2004/12/16 - 01:50:16 (ET)
Table '3919686 59' Seat #9 is the button
Seat 1: sttaf (20365 in chips)
Seat 2: ACES P.I.M.P (10190 in chips)
Seat 3: Yeti Hunter (12466 in chips)
Seat 4: Corgold (29590 in chips)
Seat 5: BonoVox33 (3573 in chips)
Seat 6: DaKidCapone (10107 in chips)
Seat 7: JohanBodin (12840 in chips)
Seat 8: fatboyss (17974 in chips)
Seat 9: lvstraddle (30924 in chips)
sttaf: posts the ante 50
ACES P.I.M.P: posts the ante 50
Yeti Hunter: posts the ante 50
Corgold: posts the ante 50
BonoVox33: posts the ante 50
DaKidCapone: posts the ante 50
JohanBodin: posts the ante 50
fatboyss: posts the ante 50
lvstraddle: posts the ante 50
sttaf: posts small blind 300
ACES P.I.M.P: posts big blind 600
*** HOLE CARDS ***
Dealt to DaKidCapone [Ad Ac]
Yeti Hunter: folds
Corgold: raises 600 to 1200
BonoVox33: folds
DaKidCapone: calls 1200
JohanBodin: folds
fatboyss: folds
lvstraddle: folds
sttaf: folds
ACES P.I.M.P: folds
*** FLOP *** [3s 2c 4s]
Corgold: bets 1200
DaKidCapone: raises 7657 to 8857 and is all-in
Corgold: calls 7657
*** TURN *** [3s 2c 4s] [2s]
*** RIVER *** [3s 2c 4s 2s] [9d]
*** SHOW DOWN ***
Corgold: shows [As 9s] (a flush, Ace high)
DaKidCapone: shows [Ad Ac] (two pair, Aces and Deuces)
Corgold collected 21464 from pot