AQo in position vs maniac and unknown - dumb play?

[Arp220]

UTG player was some 85/75 maniac over 100 hands. Raised practically anything if folded to him and raised nearly all his hands UTG. MP seemed fairly solid. I'd been completely card dead since sitting down and so was projecting a very tight image.

UTG had been running all over the table for a little while. In the previous two hands, MP had started to play back at him a little.

So, this hand happens. I look down and see AQo and think WHEE GOOD HAND SQUEEZE ISOLATE!! and shove. Ok I was a bit tilty ... but was this a seriously bad move?

Poker Stars, $0.05/$0.10 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

BB: $22.10
UTG: $7.20
MP: $11.80
CO: $10.05
Hero (BTN): $6.90
SB: $4.65

Pre-Flop: A[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/club.gif[/img] dealt to Hero (BTN)
<font color="red">UTG raises to $0.60</font>, <font color="red">MP raises to $2</font>, CO folds, <font color="red">Hero raises to $6.90 and is All-In</font>, 2 folds, <font color="red">UTG raises to $7.20 and is All-In</font>, MP calls $5.20

Flop: ($21.45) 3[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/club.gif[/img] (3 Players - 1 is All-In)

Turn: ($21.45) A[img]/images/graemlins/club.gif[/img] (3 Players - 1 is All-In)

River: ($21.45) 7[img]/images/graemlins/diamond.gif[/img] (3 Players - 1 is All-In)