Sometimes I'll be in a spot like that, decent position, and I'll limp in with a mediocre+ hand, but say, "Okay, it's getting late in the tournament, I need to make move so of someone goes all in, I'm just gonna call..." Maybe that's what the other guy was doing?

Granted, I probably wouldn't use K,2 and I probably wouldn't do it with 6k chips when the bb is only 200, but maybe that's what that guy was thinking?! I mean, I suppose he could have also just thought you were trying to buy the pot... who knows...