Hi Death,
Your friend was caught by are a anti cheat system for trying to wallhack with r_drawothermodels 2. You were also banned because of a previous history of hacking (as you told me in vent, you went on your brother account and used some sort of aimbot on non-vac servers.) You also lied to me, and tried to trick me into unbanning your brother without realising I have a higher knowleage of cvars than you realise. In short, I can't trust someone who lies to me and hacks so for this reason you will stay banned from are public server and the clan.
Kind Regards, Teddy