I believe in second chances. If someone had an account on the forum banned, then let them try again later. In this case though it sounds like he has had dozens of account deleted in just a single week in the past. It sounds like more chances would just show everyone in the game it is ok to take anything as far as you want.
There are other games out here on the internet, if you feel that you have changed as a person then you should look for a game that can offer you a fresh start that will not harbor negative feelings from the past. Most people have had to deal something remotely similar in their life. Somethings can even be forgiven but will never be forgotten. So even if you were allowed to return the negative feelings would still be there which is bad for you and everyone else. I really suggest moving on and finding a game you can enjoy, be accepted and be yourself. If I were in your shoes, that is what I would do.