Nope, Moffat just gave a few possible solutions, alluded to there being more, and hoped that smoke and mirrors would make people feel foolish for pointing out that the emperor had no robes.

Fans who were not cowed into silence took to the internet to assure each other that surely episode two would have a concrete explanation. It was only when Moffat still hadn’t committed in the second episode that people lost hope, rationalized, or concluded that Sherlock had jumped the shark.