A little info on the nurse
The man choked by Josh Koscheck in the previews for The Ultimate Fighter is no stranger to the MMA world. The unidentified chokee is Brad Tate. Tate is a paramedic and an integral member of Greg Jackson’s team, including GSP, as well as a very close friend of St-Pierre and the other members of the Jackson/Winklejohn camp.
Don’t feel too badly for Tate, he’s a pretty tough guy and could probably hold his own. If the Koscheck/Tate argument turns into a real dispute, put your money on Tate.
As well as being a talented paramedic, Tate has an irreverent sense of humor. It’s probable that one of Tate’s humorous cutting remarks hit a nerve with the short-tempered Koscheck. He probably said something like “Hey Josh, why do you keep dying your hair? You look like a douche”. It’s also possible that the whole thing is a misunderstanding exacerbated by clever editing by the TUF staff, or Koscheck may have just been demonstrating the Koscheck method of picking up women.