Guys, how can you really believe that people from the Board of Directors or anyone else can be higher that the GB?
Let's say for example that a member of the BoD, even the President (D.Adams), disagrees with the GB and tries to have power over them. So what? The GB can easily delete him of his privileges as an elder, strip him of his Bethelite status (or even DF him), and thus D.Adams automatically loses any power he might have had.
I mean, everyone in the Org, EVERYONE, no matter how high up on the 'technical' ladder he may be, no matter if he's a chief-lawyer, an chief-accountant or a Board of Directors member, is first and foremost subject to the religious authority of the GB. If they like, they strip him of his eldership, and since he's not an elder anymore, he can't hold any position of influence in the WTS.
Don't try to make this more complicated than it is. Remember Occam's Razor: search for the simplest explanation. Which is: the Top of the JWs are the GB, simple as that. They are a self-sustaining and self-propagating group of delusional fanatics, purely Orwellian in nature, who, like the Inner Party, are masters of Doublethink: they know they are decieving the R&F, and at the same time they firmly believe they have the Truth.