Of wendigoes and sammiches
Hah - that would've been a fun twist as well.
But no, the story was aimed to be an introduction to the Weird West and I ran it as such to my group.
Basically, the heroes are in a small town when the bank gets robbed. They only get involved after the robbers have taken off and the town marshal forms a posse.
They chase the robbers into the mountains, stumble across a cabin (of course), then find out a mountain man has killed the robbers, who also is about to turn into a wendigo (which is does right now at the opportune moment, of course).
Then the wendigo takes off with the Mountain Man's kids, so the posse chases after him still, higher into the mountains, a sasquatch gets involved by leaving clues about how to find the wendigo...
I remember they rejected the original ending as being too dark.