This might add to the discussion:
http://www.perefound.org/home2.html
The Peregrine Foundation is a charitable, educational and research public foundation created in 1992 to assist families and individuals living in or exiting from experimental social groups. Its newsletters and books inform the public-at-large about the structure and ideologies of various religious sects, communes and intentional communities.
I'd be interested to read research about people integrating into society from alternative social groups.