It’s more of a toothpaste out of the tube situation, once you break the seal and squeeze it out, you can’t put it back in
Like if someone was married to someone in production, and they got divorced, there’s no way to prove that, even though you’re not together anymore, they didn’t give you inside info (and thus an edge) while together.
Only way he shows up on 50 is if they’ve since changed the rules, but if I was one of the other players out there and saw him I’d still be raising lots of questions about fairness.
At this point if you want to see him back on TV you’re better off hoping/praying he goes for another show like The Challenge