The admins are pretty forgiving, if a banned member were to contact the Admins and discuss the issues and make a commitment to follow the rules, we would likely give yet another chance. That has happened. Some chose to burn their bridges by sending a bunch of name calling e-mails, which only serves to assure us that we made a correct decision.
It does not help his cause to have someone posting a one sided view on his behalf, it does not tell the whole story, and its not the place to discuss specifics about a member in any event.
A very good way to get a quick warning or a ban is by insulting members or CR administrators in a public post. I try to remove insulting posts that directly call someone a name, but obviously we do not read every post and rely on members to report serious issues.