I don't see anything wrong, again, yes used racist word, but in a context which is a joke wise nothing wrong.
I don't really know anyone who is black playing there and as we know "NO ONE" I mean NO ONE uses "******" as an insult. If someone still does they need to be stoned! I am not racist, it's only a slang which used to be offensive in the past - "IN THE PAST" don't mix 2 things.
I don't understand what's the permban for?
Should I hold another admin meeting to discuss admins and their actions and those who doesn't attend demote? Or maybe just wipe all admins except for trials?
This is starting to be a kindergarten again.
I would unban you, but as Roni said, let unban panel sort this.