Well, yes, a clearer perspective is provided by the actual ArbCom decision on the Blu Aardvark ban appeal:
Wikipedia:Requests for arbitration/Blu Aardvark .
This appeal was brought just a few days after the wikidrama described. The page gives a clearer idea of what was involved.
Hmmm... principle 3 does seem to be in direct conflict with the standard definition of a community ban... The standard definition requires a consensus to ban only, if doesn't require a consensus to unban once banned, only that the consensus to ban no longer exist (and if there is an admin willing to unblock, then there clearly isn't a consensus).