Folau also claims RA has discriminated against him on the basis of his religious beliefs, prompting him to take the matter to the Fair Work Commission where he is seeking to have his contract paid in full, as well as other damages, with a estimated tag of $10 million.

In a confidential letter sent on Saturday, Folau objects to information from the code of conduct hearing being made public.

"I would like an explanation as to why recent detailed media articles about me have revealed aspects of confidential sworn testimony and witness statements from the Rugby Australia Code of Conduct Tribunal," Folau wrote. "This is blatantly unfair. As you know, the Tribunal hearing must be closed and private, and Rugby Australia was obliged to keep all information confidential. I would like to know why Rugby Australia has not managed to maintain the integrity of its processes and ensure that information was kept private and confidential."

RA has been contacted for comment, as have representatives for Folau. Folau has accused RA of leaking information to the media after he was found guilty and sacked for a high-level breach of the code of conduct for a social media post in April that said homosexuals were destined for hell unless they repented their sins. In the letter Folau said he believed RA could not be trusted.

"I feel like the way the hearing and related matters have been described in the media has been unfair and misleading," Folau wrote.

"For example, I am not "sick of rugby" and whoever told the media that I am is telling lies. Another example is the way the media has been told that that your "expectations" were made clear to me by Ms Castle. We all know that that is far from the truth. It makes me sad that these things have apparently been told to the media by someone at Rugby Australia. If you are not the source, why has no one come out to set the record straight? I decided not to appeal the panel's finding because I wasn't confident you would treat me fairly if I did. This week's media shows that my instincts were right."

Folau's explosive comments come after the former Wallaby said he would take the matter to the Fair Work Commission, with legal action also a possibility.

"I wanted to let you know how deeply saddened I feel that the game that I love has discriminated against me because of my religious beliefs," Folau wrote. "I know this may be difficult for some to understand, but I am nothing if I am unable to share the word of the Bible with my fellow man.

"And yet the position of Rugby Australia is that I must be banned for life for doing so. Finally, as I believe your termination of my employment was unlawful, I wanted to inform you that have made an application to the Fair Work Commission in the hope that this injustice may be reversed. Yours sincerely, Israel Folau."