I used to work in that area (up until May) and ever since I started working there in 2009 there has only been one CM at a time (unless another is just hanging around, but only one actually assigned). It was sometimes like punishment being there for 3 hours at a time with no one else, haha. So that isn't really an indication of anything. Also, the store opens about 11 am and closes an hour or so earlier than park close. Sometimes earlier. So that's not really anything unusual either. It's included in the same merchandise area as Mickey's of Hollywood, Keystone, and a few others. All of the props and autographs are from Michael Wehrmann.
I still work close by and haven't heard anything about it leaving, but I haven't actually set foot in there in a month or so. I walk past it around 3 every day and haven't noticed anything too alarming. I always make a point to peek in the doorway and see if I know anyone working
That's interesting that the Sid picture is gone though! But I wouldn't read too much into it. Things get knocked off the wall there a lot.