I too left because of false doctrine,long before the above quoted WT came out.
But I remember that kind of statement being made, that most were DF'd for immorality.wereas the truth of the matter is that many many leave because of the false teachings.
To see an example of their dirty tricks, look at Paulapollos's thread, where he shows that they were all DF'd for apostasy, from Mill Hill bethel, but subsequently one of their number did something wrong, and that is being sited as the reason he was goonered.
Love
Wobble