Check out the ending to THE DEMON taken off this Danish tape.
http://www.youtube.com/watch?v=eA8YHmEYrgUI remember reading one review where they mentioned that Cameron Mitchell was watching from the shadows at the end. I thought the reviewer was imagining things, but here lies the proof, I guess....
This is way weird indeed: didn't he die? Or was the Demon a manifestation of his inner turmoil?

You've seen the SA print, and the US and international prints... Why does this Danish version have CM at the end? Did Ruby make mention of any alternate versions of his film and what purposes they served?
I don't know of any other versions that Percival made: I do know that the 35mm print we have in the NFVSA is uncut.