Blinds at 400-800 my stack 21000
UTG is Mohammed min raises to 1600 he has about 40000
called in 3rd position by Paul Zimbler who has just won a couple of big pots, is hitting and buzzing. He is table chip leader
everyone folds to me I have

in the big blind (suits may be wrong but not important for hand)
I reraise to 4800 which I think is a mistake. The raise should have been bigger. I am out of position and taking this pot now is not a bad result. Mo could have not much or he could have Aces. When he just flat calls I can eliminate AA as he would reraise for sure now with another player in the pot.
Paul thinks for a good minute or so then folds.
Flop comes

Godammit!! just once can I please have a flop without an ace when I am holding KK
Anyway, I reason there is every chance Mo doesnt have an ace here and I cant bear the thought of checking and letting Mo bet me off the hand, so I bet 5000 with the intention of surrendering to any resistance.
Mo folds and I take down the 12000 pot, leaving me on nearly 30k instead of 11.
The point about this hand is that Paul Zimbler folds

In my opinion this was a mistake. I spoke with him about the hand later and he said he knew I had big pair. Even so, with 11600 already in the pot and only 3200 more to call, he has position and plenty of chips and 2opponents with reasonable chips left in front of them. The situation, current pot odds and large implied odds demand a call in my opinion.
As it happens, with 2 players behind me, I almost certainly dont make the 5k bet on the flop as it is just too likely that one of them has an ace.
I would be interested to hear opinions
cheers