We didn't do a three for all for one reason. We figured you would not want to do a 3-way game since it would have been a Planet Fall Game since Moon has a Wing army in his empire that can respond to us landing in his territory, and since you had no wing army you would automatically be wiped out if you did agree.
I would contact Paul or Nick for what happens to your army. As far as I know it lands does not take the tile, but is intact, and you can issue orders for it like normal for Turn 10.
Sorry about the late response to your question Brad.
