@Itsmeagainandagain,
You're probably fine. I run a bunch of pages and I get people liking an abandoned page all the time. That page sometimes has weeks where it grows faster than active pages, which is weird. But it's just - Member A likes the page. Member A has 1000 friends. Members B - E are friends of Member A and see the like. They don't investigate and like it, too. Members F - H are friends of both A and B, so they get an even stronger social signal and they like it, too, etc. etc. lather, rinse, repeat.