I know Frank personally. Once I asked him what gave him the first clue that something is wrong with the Governing Body. Frank said it was the release of a new book. He was impressed with the "new light" published in this than new book and begun talking about it to one of the governing body members.
The guy (the GB member) gave him shit for talking about things not in harmony with the teachings of the faithful and discrete slave. Frank became confused but he didnt tell the guy that he read this in the new book.
It was bothering him for a while, and one day he told about it to a senior member of the writing department. The guy at the writing department told Frank that some of the governing body members dont read the publications at all. It takes a couple of years for some of them to catch up with the new light.