The Watchtower articles are avaible months eariler to the Circuit Overseers. There's no way the Watchtower can track the Mole down. It could have been leaked from any COs or sub-COs or Watchtower heavies or their trusted friends and family members. Being a most hard core JW, in the past even though I was female, I was shared the Wt articles months prior to their releasing to the public.
When I was being Wicth Hunted by the Watchtower elders, I found myself being assisted and counseled by the unknown Bethelite. He was helping me through the third person. One of the things I was told was to threaten to sue the elders and the Watchtower if all other tactics fall apart. It was an unthinkable action at the time as I was still a believer that I did not follow through the counsels. Looking back, the Mole was right on the money. As far as I know he and his wife are still in the Watchtower Headquater. To this day I have no idea of the identity of the Bethelite.
I am not surprised the possibility of some seriouse dissenters especially among older bethelites who remaining in the cult not having any other options but rely on the Watchtower for Shelter and food. My heart goes out to them.