PLO8 $100: AA hand meets resistance on flop

[MattS]

How would you play the following hand against an unknown opponent?

Party Poker
Pot Limit Omaha Ring game
Blinds: $0.50/$1
10 players
Converter

Stack sizes:
UTG: $97.55
UTG+1: $112.45
UTG+2: $76.06
MP1: $47.45
Hero: $133.20
MP3: $24
CO: $80.69
Button: $69.67
SB: $112.93
BB: $36.42

Pre-flop: (10 players) Hero is MP2 with A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/heart.gif[/img]
UTG folds, <font color="#cc0000">UTG+1 raises to $2</font>, 2 folds, <font color="#cc0000">Hero raises to $7.5</font>, 4 folds, BB calls, UTG+1 calls.

Flop: 7[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] ($23, 3 players)
BB checks, <font color="#cc0000">UTG+1 bets $8</font>, <font color="#cc0000">Hero raises to $45.85</font>, BB folds, <font color="#cc0000">UTG+1 raises all-in $96.95</font>, Hero calls.