Another A-X hand

[11t]

Is this a pretty ridiculous move?

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (6 handed) converter

Hero (t1565)
Button (t2240)
SB (t1760)
BB (t865)
UTG (t4340)
MP (t2730)

Preflop: Hero is CO with A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
UTG calls t100, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t300</font>, <font color="#666666">1 fold</font>, SB calls t250, <font color="#666666">1 fold</font>, UTG calls t200.

Flop: (t1000) 8[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, UTG checks, Hero checks.

Turn: (t1000) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, UTG checks, <font color="#CC3333">Hero bets t1265 (All-In)</font>