Sorry. I need to really break your balls here. Admin is fully aware of how to run the software. The banning was done by a person that isn't as schooled as some in the use of the software, sans of course not having full usage capabilities.
The fact of the matter is that the banned person may be banned by name, IP, Host, email and IP block. The reason we are able to reply, is the thread wasn't locked. That, seeing as like you, I have no access to the Admin section, we have no control.
So don't break balls where they aren't deserved to be broken. I run a few very small boards. No Mods needed. This board has a worldwide following. Following the following is a world full of potential spammers, Trojan dumpers and all sorts of Malware kings and queens.
Leave it be and enjoy what you can.