I think that book displays his ignorance of how to go about being a successful author. Publishers guidelines exist for a reason. A memoir should be about 80,000 words, that's well under 400 pages. No one outside the JW or XJW communities (and probably a good number inside that community) wants to read 800 pages about Jehovah's Witnesses. He seriously needs an editor to take an axe to that monster.
There is a cure for ignorance: research, education and hard work. My first published book was the second one I wrote (and has nothing to do with JW's). I suspect that Lloyd made a rookie mistake, one I will confess to making myself. When you get your manuscript done, don't wrap it up an start trying to sell it. It isn't ready by a long shot.
And even if you do manage to get something sold, odds are you won't come close to selling enough to live on. That's just how it is.