Brett Burleigh II
Bless the Maker and His water... Bless the coming and going of Him... May His passage cleanse the world...
I think that the FAQ has addressed this…
Ahhh, yes… they did:
What happens if the monster ambushes the survivors, but the Dead Monster terrain is on the showdown board?
Effectively, the two rules cancel each other out. The monster skips its first turn and the survivors skip their first turn.
edit - added link for FAQ