[LinusKS]

I don't know the odds off-hand, of two players, each with 4 cards, not having an A, a Q, or a J. But I think it's (36/45) to the power of 4, squared, or ~ .168.

In any case, he's still drawing if he keeps his tens. He has four K's, for the nut straight, plus two T's, for a total of six outs.

On the other hand, he picks up two additional outs if breaks up his tens. Breaking up a hand that might not lose, even unimproved, in order to pick up two additional outs seems wrong to me, although I'm not sure how to calculate it more exactly than that.