Wrestler Mark Schultz, whose story inspired the Oscar-nominated movie 'Foxcatcher,' has offered an apology to the biopic's director Bennett Miller for publically slamming the way his life was portrayed on the big-screen.

Mark Schultz [R] is played by Channing Tatum in Bennett Miller's Foxcatcher

Schultz, whose brother David's death from a fatal shot by John du Pont in 1996 is depicted in the film, posted a series of tweets on Saturday and Sunday to express his regret in criticising the film. He also argued Channing Tatum should have been nominated for an Oscar, and also called for Miller to be prized with an Academy Award for best director.

More: Steve Carell, Channing Tatum and Mark Ruffalo Recreate The Schultz Brothers' Story For The Big Screen

"I apologise to you before the world Bennett," Schultz first wrote. "I'm sorry." He added: "I think the problem I had was the context of the movie. It's what happened was so hard. My brother's murder. My career ruined."

"#Foxcatcher is a miracle. I'm sorry I said I hated it. I love it. I love my interpretation and will ignore the haters. I'm never getting mad," he continued. "Bennett Miller is the greatest director ever. 3rd time's the charm. He's due an oscar."

Shultz added, “I feel terrible about what I did to Bennett. I should have followed God, not man... Foxcatcher is going to help wrestling. There’s so many positives and no negatives. When I fought and Dave wasn’t there was so emotional.”

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'Foxcatcher' tells the story of the notorious Du Pont, heir to the Du Pont fortune who created a state of the art Olympic wrestling facility at his property. There he created the talented 'Foxcatcher' wrestling team.

Earlier this month, Schultz went on a lengthy social media rant about aimed at Miller after several film reviews insinuated there was homosexual undertones in the relationship between the on-screen Schultz (Tatum) and du Pont, played by Steve Carell.

Schultz was angered after film reviews insinuated there was homosexual undertones between him and du Pont

The Olympic gold medallist, who was initially fully supportive of the movie, wrote on Facebook and Twitter: "The personalities and relationships between the characters in the film are primarily fiction and somewhat insulting. Leaving the audience with a feeling that somehow there could have been a sexual relationship between DuPont and I is a sickening and insulting lie."

He also referred to Miller as "punk", "pussy" and "liar" in posts he quickly deleted.