At minimum, I would say some kind of confidential letter/phone convo containing direction to "thin the flock" would need to surface. And this "direction" would need to contain the trademark surreptitious manipulation of scriptures that the society is known for.
EDIT
OneEyedJoe wrote:
you'd have to get multiple independant reports from high-ups at bethel, or some internal memo or GB agenda item or something that confirms it.
great minds think alike