Someone back me up here...

Weekly tournament at my casino...$100 buy-in, 5000 chips, about 100 players. Anyways, about 20 players left, blinds at 1000-2000, I am chip leader at my table with about 45,000. UTG goes all-in for his last 7800...one MPP calls, folded around to me in BB and I have the K [img]/images/graemlins/spade.gif[/img]6 [img]/images/graemlins/spade.gif[/img]. Now I call 5800 more. Now I have a good enough read on my other opponent (about 30,000 left) that he will check this hand down unless he has a lock on the hand. Now we check the hand down and I end up catching a 6 on the river, my all-in opponent had QJ and my other opponent had AQ...now I was berated from my opponents for making what they thought to be a very loose call of an all-in. Most of these players are fairly weak and I wouldn't expect all of them to understand my call...but I still need some backup here. I mean, it's a no brainer call pre-flop right?