You are right about the the demon decreasing entropy. I was caught in a mental misfire due to superposition of "entropys" I was thinking information (CE Shannon type bits) entropy, and while dealing with the question which was about thermodynamic entropy -- where the higher energy group bottled in one room will flow over to the lower energy group in the other room through the Hall of the Demon.
Personally it seems to me in social situtations that the flow goes the other way -- maybe we all have a bit of Maxwell's Demon in us.
If the demon is allowed to use magic, it can really violate the Second Law. But that amounts to giving the demon a demon. If you make it use physical principles to detect molecules and manipulate the trap door, the Second Law is preserved.
If you are representing the Christian faith, that is an odd thing to say.
Now a bit of Captain [...Morgan's Spiced Rum], or Maxwell House Coffee (the coffee that heats itself?)...
PS Didn't whoever it was who MISquoted "Creationists being put in concentration camps" say at the time that they didn't have the text at hand. I'm willing to bet they were blowing smoke or hadn't ever rousted up the original source to know they were wrong. At least, I hope so. Free Republic ought to have some standards, even on a crevo thread...
Cheers!