Blizzard doesn't like that at all, and they're out for blood. Or law, rather. They're suing the creator of a bot on WoW, claiming that, "Michael Donnelly's Glider software infringes on copyright, WoW's EULA, and potentially damages the game. " Ouch, to say the least.
There's only one thing to do here: say you're sorry and immediately fix it in hopes that they won't push the subject or get out of the country and hide.