Yes, at least you have the page back. Grats. What I'm noticing is that my same 3 Facebook friends like both your fan page and the TV show's page. But that's possibly a strange coincidence.

This might be the work of FB running some categorization cleanup. Your fan page is now sub-categorized as a Community Page for the Sherlock TV show.

FB doesn't seem to have all popular fan pages sub-categorized. For example, fb.me/fansofapple, isn't shown connected to Apple at all.