Even if he was ever good at boxing at some point in his life- which I don't believe he was but for argument sake lets assume that when he was 20 or 30 he had solid boxing fundamentals- going into boxing ring at the age of 50 is about one of the worst decisions a person can make in their life. Let alone a boxing league.
Nah, this is clearly the action of a budding law school student. I guess that puts any future layer fantasy claims to rest. He's so delusional, bored, and needy of attention that resorts to this. And there'll be no one in his corner. Hopefully there will be a stool to quit on.