I concur with the OP somewhat..not 100%.
I shall elaborate - I think that the forum regulars were somewhat in the wrong, I think in general people are way too hostile to newer members than they should be. Not everyone is a forum personality, some registered strictly to air their concerns that a feature of a server they regular was removed without (at that current time) any justification. The way they were treated was wrong, the way they reacted in turn was of course wrong..nothing justifies bigotry.
Creeping was in the right to ban him for the racial slur, however I do know that people do dumb things when agitated, so yes it was a minor issue, but imagine you start a thread to complain about a minor issue and the first response to your perfectly legit question is "LOL WHO R U?" It's just stupid, and uncalled for.
Stop provoking newer people to the forums, that thread could of been handled more maturely from both sides (not just the side of the "newfags")
All in all, I don't think actual ACTIONS are required, so no warning points for anyone who wasn't a racist, but I do think admins need to start being a little more stern on people who are taking shit off topic particularly in terms of provocation.