Not sure where to put this but was having a business briefing the other day with a mens basketball referee. After our meeting I asked him about what some coaches were like during games compared to off the court. He specifically said he had done a few Duke games and mentioned that Mike Krzyzewski was an absolute tool on the court. He said he will sit there and call you every name in the book and swear at you all game long to try and intimidate and then turn around and do an interview and completely change demeanor.
I'm sure we all are aware that he's a weasel, but yet another story to confirm it....can't stand that guy.