I think sex will always be the top reason for being Df'd, its just human nature and doesn't require the work involved in going out there and doing the research to find out the "truth" is a crock of shit. I do however believe Elders would try and get you on anything else other than apostasy. Think about how bad it sounds coming from the platform when name after name is read out as no longer being one of Jehovah's witnesses and a talk on apostasy is given. It sounds to the rank and file that somethings definitely wrong and that the Elders, the spiritual shepherds of the flock are failing in there duties.
I also am finding a lot of old friends that were disfellowshipped for sex, but now they are out are looking on the internet and realise it is not the truth, so have stopped planning to go back. Disfellowshipping is starting to be counter productive.
I faded but still believed. Had I still been in I would have followed the orgs instructions and stayed away from religious apostate sites and so would never have found out the REAL truth. However the elders lost this little sheep and I was able to see for myself exactly how bad the Wolves really are. Far from being the Religious Nutters that I was once warned about I've found a bunch of ordinary people. Bit of a let down really.