$25 PLO8 hand - was I too aggressive?

[XxPenguinxX]

I had previously re-raised Villain twice (once preflop, once on the river) and he'd folded both times.

Seat 1: Cockle ($8.50 in chips)
Seat 2: divoter ($18.80 in chips)
Seat 3: The3rdMan ($10.90 in chips)
Seat 4: TeamRamRod21 ($0.90 in chips)
Seat 5: Villain ($23.75 in chips)
Seat 6: d-ran 08 ($13.15 in chips)
Seat 7: Brilliant27 ($14.60 in chips)
Seat 8: Hero ($32.50 in chips)
Seat 9: Alien666 ($24.65 in chips)
Hero: posts small blind $0.10
Alien666: posts big blind $0.25
*** HOLE CARDS ***
Dealt to Hero [K [img]/images/graemlins/heart.gif[/img] A [img]/images/graemlins/club.gif[/img] A [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/club.gif[/img]]
Cockle: calls $0.25
divoter: calls $0.25
The3rdMan: folds
TeamRamRod21: folds
Villain: raises $0.50 to $0.75
d-ran 08: folds
Brilliant27: folds
Hero: raises $2.25 to $3
Alien666: folds
Cockle: folds
divoter: folds
Villain: calls $2.25
*** FLOP *** [9 [img]/images/graemlins/spade.gif[/img] 7 [img]/images/graemlins/spade.gif[/img] 6 [img]/images/graemlins/spade.gif[/img]]
Hero: bets $6.45
Villain: raises $6.45 to $12.90
Hero: folds