In what appeared to be the first day of filming for  Nate Diaz on the “Russian TUF” reality show, the UFC legend was involved in a  wild brawl with a contestant and abruptly left his coaching position on the show.  Diaz posted a  video to his  YouTube channel chronicling his travel to Thailand to coach opposite UFC heavyweight champion  Jon Jones . Diaz arrived, purchased marijuana and briefly settled in to his accommodations. A few hours after arriving in Thailand, Diaz and crew made their way to the fighter house.  When they entered the home, you could hear loud arguing and see cameramen scrambling to make sure they captured it all on film. Diaz greeted Jones and the two exchanged pleasantries before shooting a promo. They were then taken into the fight house and sat opposite one another.  The altercation began during introductions when a contestant got in Diaz’ face. The two exchanged words and the contestant appeared to try to put his hands on the UFC veteran