I like to think that the room is pretty big, in a 3D space, and that the painting isn't that noticeable after a first glance at it "Oh, it's just a painting of us, don't have to look at it again, because picture don't change, that's crazy talk!"
So, like actual demon mythos. When a guy uses or talks to a demon more, they get more powerful, some even possessing the usee/talkee, but in this case, it's more like controlling Maxwell like a puppet in the end.
I've been around since basically the game went on steam, and kept up with all the puzzles. But I swear I haven't heard of this "train crash" one guy mentioned pages ago. Could anyone explain it, or any pictures?