Donk? I think not but you decide

Today I played another live tourney with friends. The competition was much better. We had a 9 man table and out of the 9 I have a lot of respect for 5 of the players. I rebought a few times and got down to 4 handed when the following hand occured. I received a lot of shit for my call here but it was not only correct but my reasoning seemed solid to me...

I have approx. 11 BB's which is the current short-stack. I am on the button in a 4 handed game. Player UTG is definetly the loosest player left who is capable of running a big bluff. He limps. I look at AJ of hearts and raise four times the BB. UTG is the only player who calls. At this point the pot is approx 13 BB's and I have 6.5BB's left in my stack. I am pretty much pot committed unless the flop is a disaster. The flop is 248 rainbow. UTG quickly moves all in and I call instantly. He is disgusted and turns over 63. My hand holds up and I become the target of some shit talking for calling with AJ high.

I didn't say a word but raked the pot and went on to split the prize pool with a friend heads-up. How can I call with AJ high? It is a common SNG situation. I am getting over 3-to-1 on my money (13BB+6.5BB=18.5 to my 6.5). Unless he flopped a set or has AA/KK/QQ/JJ, I am by no means a 3-to-1 dog. He wouldn't limp/call with any pair so I know I am in good shape. I put him on a hand like A7, A6, 910, 67. If he flopped a pair I still have to call with overcards here. I had no choice but to call here. This is simple math and knowing your opponent's range of hands. I don't doubt that I've seen more hands than the rest of the table combined and experience makes this an automatic call 100% of the time. It is nothing like "he just wanted to gamble" or "he had a good read". It is really just knowing the situation.

I'd love to hear someone's opinion on this--InKevinWeTrust on AIM anytime. Hitting the tables for a profitable Saturday night session.