We did not notice this until we were heading home the next morning. We tried to recreate by taking a picture and shaking our heads to see if it would blur. It did not. Later while watching a special about ghosts and the hotel, someone caught an upside down image in a tv and it was the same person. You could probably Google to find the episode and see what you think.
IMO it looks like a pure motion shot, everything is blurry, and the head appears in motion as well, clothing looks very modern, and I agree on the subject appearing that it is holding something. also note in the window over the right the tree appears to be growing in the room, definitely a motion pic