Knight in Turkey.
I believe that leaves Prussia as the other traitor (as I had been hoping for awhile since him being a Knight would have sucked).
And contrary to your believe god, you made quite a few foolish moves as traitor. The King and I knew you were a traitor approximately 2 to 3 years before you made your stab. The reasons?
1) Leaving armies adjacent to the Kings territories when they had no purpose being there, even after the King rejected your "proposal" to disband his army so he could rebuild it.
2) Getting angry when it was suggested that the King take some of your territory for builds. A true knight wouldn't get angry when asked to cede centers, since that's the entire purpose of being a knight...to keep the king strong. ESPECIALLY when you had useless units sitting around that could be disbanded.
3) Continually pushing more and more units into areas that were already stalemated...see the area around the Bahamas. Your last two fleets that ended up taking the bahamas were useless in the stalemate line, and could only serve to attack the King.
I'm sure there's more, but these alone gave away your role as a Traitor. But the real kicker was that you stabbed the king at a really stupid time. I had proposed to the King that he throw the game just to f*ck you over if the game had continued. Throw the win to the Rebels to show how foolish of a move that was. By stabbing, you single-handedly weakened the King to the point where his defenses elsewhere were screwed. There were 5 British SCs in N. America (i believe), and only 2 units, meaning he would have to disband 3 elsewhere. In addition, without your supports in the oceans, he was screwed in defense. France would have rolled over his homeland, causing him to lose another 5 SCs (again, I think that's right...greenland, ireland, london, edi, and norway) and 2 more in Russia (STP and MOS). 7 more units down, and all he would have had left is the Middle East (which was already in a tenuous spot) and a couple SCs in Asia. You should have waited until S. America was sealed up at least, so that you could have helped push back the Rebel units in the Pacific and conceivably kept him alive until the Rebels were gone.