Well as you may all have noticed I went to bed after my last vote; before it I did read the thread, but I didn't get any smarter from it. As to why I withdrew my vote; I wanted to get time for more discussion and thinking.
I'm going to have to assume that GH was guilty. That excludes Xiahou from my suspects list. Also Ituralde was the target of an attempted murder, excluding him.
That leaves me with two options, Doc or Husar. Of the two, Husar has been the more active and also the more suspicious one. Doc again has managed to play through the game with lots of lurking. Both have played with two very different styles and thus makes comparison bloody hard. But I'm going to go with my suspicions, choose Husar and hope that I've made the right decision.
Vote: Husar