Ban evasion eventually results to permanent ban. If you got banned since April then say goodbye to your account already. This will serve as a lesson to you not to spam again in this forum. I'm sorry for your loss but you can still start again with your new account.
The rules say that people are banned, not accounts, so if another alt of him is found it will be permabanned too.
So better wait some months and ban appeal, if he wants to do it by the rules