I just wanted to point out that, from an in-character perspective, he did not ban 'the entire realm.' he only banned 17 on the most influential nobles - the player characters. There are supposed to be, as I understand it, to be a vast array of minor nobility / officials behind the scenes. The whole thing seems a bit less dramatic, in my opinion, if this is kept in mind. When it comes down to it, the minor nobility / officials are probably used to senseless banns and even mass bans for the sole purpose of advancing a single nobles political agenda. I am not convinced that, from the perspective of the officials enacting a ban by the order of a legitimate judge, this would clearly be a laughable order.
I also believe that the king sending letters to the 20 most influential nobles of the realm, declaring the Judge a traitor and spy, would have had much impact of the minor nobility / officials of the realm. In my mind, it is doubtful that they ever received the message aside from hearsay. Besides, there is often talk of traitor and spies so why give this latest rumor much thought. It is just another day at the job. Now, if the king had protested the Judge, and thus officially alerting the minor nobility / officials and all the influential nobles he had sent messages to had protested the judge, these minor nobles / officials would have been officially notified and they would have stopped taking orders from the evil man. As far as I can tell, this never happened.
As far as I am concerned the minor nobility / officials had received rumors one day and official orders the next. Orders banning a small portion of nobility, albeit a majority of influential nobles. I am sure that these guys probably thought, "Wow. Look at this. It looks like there are some serious power struggles going on again. I wonder who will be filling the void this time around?"
At the same time, I do not feel that the position of Judge was ever meant to be a tool for enemies to use to do massive damage to the realm. I think that it is perfectly plausible but not what was intended. I like the measures Tom mentioned but I am not sure about the grace period. It seems unnecessary to me and reduces the impact of a crazy/traitorous Judges too much I think. When a crazy Judge or Traitor Judge does this kind of thing it should really be an inconvenience...
With the easy out:
Judge: Ban them... or as many as my hours/restrictions allow!
Officials: Done. They have three days.
Remaining Influential Nobles: The guy just banned me and is a traitor. We protest!
Officials: If you guys say so. He is no longer Judge.
Influential Nobles: Jimmy! You are Judge now!
Jimmy Judge: I hereby revert all your bans. I also ban the traitor!
Influential Nobles: Yeah!!!
Without it:
Judge: Ban them... or as many as my hours/restrictions allow!
Officials: Done. They have three days.
Remaining Influential Nobles: The guy just banned me and is a traitor. We protest!
Officials: If you guys say so. He is no longer Judge.
Remaining Influential Nobles: Jimmy! You are Judge now!
Jimmy Judge: In five days, I hereby revert all your bans. I just need to sort out the logistical mess Traitor left behind.
Ruler: I exile you traitor!!!
Jimmy Judge: Everything is in order now. I ban you Traitor (If you are still around)
Influential Nobles: Grumble... Finally I can Join the realm again... Man this was a pain...
I can not say that all the details are right and I am assuming that remaining nobles would be capable of protesting the guy out of office. It is the general idea I am going after anyways. Once again, I do not think that the Judge should be used as a tool of war but I do think that a ban should be a hurdle to overcome. I am cool either way though. I simply can not believe that this is something that has come up so often! I would never have thought of it if not for this thread. Not that I ever would do such a thing...