[LeonhartM47]

Well managed to find what entry in the database it was prior to being deleted...
attempted to delete it again via url injection etc. and it actually after a few attempts said it was successful...
however the entry it said it deleted was blank with no name or steamid on the confirmation on the webpanel...
I think this hints that the entry on the database is blank or the key was invaild and it showed as a false accepted for whatever reason...

in short same issue as mentioned before but I'm not convinced it's still in the database... awaiting the head admin to check the database for possible issues but he's away at the moment... all I know for certain is that something is readding it during a sync periodically and yet even if the "banned_user.cfg" entry is removed the player can't enter because he's still considered banned by the server and in a short time it's back in the file anyway.