That's pretty much along the lines I'm thinking, only I forgot the truck, and didn't think about a mask. The mask idea does work, and would explain the little girl's reaction to Sherlock. I also knew that Holmes figured it all out as the article suggests, and knew he didn't go to Molly for anything other than help in defeating Moriarty. It was all smoke and mirrors in the end, a show for Moriarty, and for Watson. But, like the writer of that article, I'm probably wrong, too.
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