Let's see, it's about 14 years and counting. Except for on-and-off pressure from my father (who's not an elder anymore), I've never heard from a single one of them. At first, they may have believed I moved to another congregation which I think I told my dad at first - my becoming inactive sort of corresponded to moving away from home. My actual abandoning it came about 2 years later.
So, maybe they just thought I moved to a new hall and was somebody else's problem.