It sounds like Mr. Rathbun is getting a little apprehensive about:
1.) Scientology finally being exposed as fraudulent bullshit to the world at large;
2.) A potential large reduction in CoS finances as a result of refunds/legal fees/no new members/blows.
I was willing for a while to give him the benefit of the doubt, but I now think that his ultimate plan is to replace DM as head of the cult and continue with business as usual with much better funding.
I have stated several times that DM remains in power only because he knows where the money is. Once Marty gains that knowledge, DM is done and Marty is in.
Marty just keeps shooting himself in the foot with the critics. It should be obvious by now that he has no interest in calling the cult to account for its abuses and criminal activities. His main talking point is that DM is a squirrel and the "tech" is being misapplied. I for one am now convinced that Marty does not want the CoS as an organization taken down. He simply wants DM out so he and his buddies can move in. Marty and friends may be true believers, but ultimately it's all about the money. There is no reason to believe that if Marty ascended to the leadership of the cult that the abuses and criminality would cease.
I feel the same way. He just wants what's good for him, and to settle his grudges against Miscavige. I don't see any chance of him being able to take over the ruins of the cult. If it came to that point, cult members would want someone with much cleaner hands than Marty has.