Real Life Mark Schultz slams Foxcatcher?

After facebook cofounder Mark Zuckerberg said that he was hurt with some of the elements in the film based on his lifer, The Social Network (2010), there's another biopic that has been slammed by the very person the film is based on.

Foxcatcher which has earned 3 Nominations at the Golden Globes is based on the real life events of Mark and Dave Schultz, brothers who were Olympian wrestlers has left one of the brothers, Mark Schultz rather angry. Schultz , who was creatively involved with the movie and had gone on record several times appreciating director Bennett Millers intention recently took to social media to go onto write "unpleasent" things about the director and the movie.

Source:hdnux.com

He tweeted several tweets including threats to the director. A tweet by Mark read, "you crossed the line Miller. We are done. Your career is over. You think I can't do it. Watch me". Another tweet read, "you think I'm going to sit back and watch you destroy my name and reputation I sweat blood for. You ain't seem nothing yet dude". 
Going by Schultz's impressive wrestling background, it'd be better if Miller atleast speaks to him about it.