In an interesting point, it seems there's a random sign that represents in backwards vertical down to more of an "I'm Back".
I'm not sure why it's here, but it is interesting to see them do something that to me; seem's random.
Just got back from Orlando did the 3 house tour on Wednesday.
So our tour guide told us that the curtain and sign are there on purpose and he hinted something could appear there as the event went on, he proceeded to go behind there and poke his head through the curtain.