Ban is totally legitimate because you made clearly allusions on einstein.
Ban is even more legit because people from many different ethnical groups and religion play cRPG and I am sure someone could feel offended by you, capslocking and writing 'Sieg Geil'.
I remember that Pawiu the Grey once wrote a ban thread for someone who called him a jew in an offending way, cant remember what really happend.
You could search the thread, you should have time anyway since you are banned. hue
And as Krex and Heskey already said, you should really stop trying to get unbanned, people on the server felt offended as everyone could read in the chat and he only did his job as admin.