about 5 spots away from bubble, was this a very big mistake

aiyuki (opponent) was definitly not a tight player

** Game ID 1103067331 starting - 2006-12-23 18:31:34
** Poker Rewards Tour Match No.7[668773]:Table 6 [Hold em] (600.00|1200.00 No Limit - MTT) Real Money
- sherman58 sitting in seat 3 with $42149.58
- GiveMeRoyal sitting in seat 5 with $1730.64
- aiyuki sitting in seat 6 with $5867.17
- Sebastes sitting in seat 8 with $6451.26 [Dealer]
- daRomingNOME sitting in seat 9 with $12550.32
- Mahdrek sitting in seat 10 with $7237.07
daRomingNOME posted the small blind - $300.00
Mahdrek posted the big blind - $600.00
** Dealing card to Mahdrek: Queen of Clubs, Queen of Hearts
sherman58 folded
GiveMeRoyal folded
aiyuki raised - $2400.00
Sebastes folded
daRomingNOME folded
Mahdrek raised - $5202.52
aiyuki went all-in - $3467.17
Mahdrek called - $5867.17
aiyuki shows: 10 of Hearts, 10 of Clubs
** Dealing the flop: 10 of Spades, 6 of Spades, 3 of Diamonds
** Dealing the turn: Jack of Diamonds
** Dealing the river: King of Hearts
aiyuki wins $12034.34 from the main pot
End of game 1103067331

this one pissed me off cause same guy after crippling me, knocked me out in 11th (Bubble) when he had pocket QQ