I think the whole idea of moving and fading is to avoid shunning in one form or another.
I say that we should tell people like it is. It is important; as in you don't believe in this anymore. In this way you can not move but just start a new life with "truth", meaning you are looking for a new direction in both life, religion, philosophy, or whatever.
I told my family I don't believe in this anymore. They still accept me and do not shun me. Things may change but I think running and hiding only prolongs the enevitible, that is you are a independent person and that your ideologies can be contrary to your families.
anyways, just my 2 cents.
peace
Maksym