Exploting a Loophole...

Yes, you know the one.

So, let me see if I have the timeframe right. They kill Arthas, then they get banned for exploiting.

How did Blizzard know?

Is it de rigeur for Blizz to go over every World First Combat Log? Do GM's sit and watch the kills from up high, popcorn in hand? If there were an exploit, would Blizzard even be aware that it existed until someone pointed it out to them?

Would it not make more sense that someone inside the Guild concerned might have had a pang of conscience and blown the whistle on a kill that people were aware at the time didn't feel right, but that they decided to go with anyway?

Does this sound like a more likely scenario?

Whatever happened, it's great theatre. Remember kids, it's only a game. You may lose as well as win...