I can't imagine why ebay would end that auction unless maybe people reported it and why would they do that? It shows no signs of being a fake. I hope people don't do that to end auctions then contact the seller to try to get the bag. That is so not right. I emailed the seller and asked what happened.
Very easy, not hard to figure out either.! I was having trouble seeing how someone could pull this off, glad to hear that it wasn't a scam (but what the heck was it?).
I wish you would just take off that signature though!