I don't know anything about it but the woman is his fifth wife and he has four kids. Maybe he just wants his kids to be able to get the bulk of his estate. If he succeeds, the his ex-wife--who was a former waitress--will get a quarter of his estate. It seems there's two general reactions to dying people: support and bat-shit mortification of one's own mortality. She probably went with #2 and he was all "well, fuck, I've given her all of this shit and she won't even comfort me in my last days. imma divorcing this bitch." Not that that's been written anywhere, but that was my assumption if it's true that he's retained all of his faculties (since some ppl are saying otherwise). Reportedly, he doesn't want her anywhere near him.
Just to add, however, that the daughter in question in Faye's post has that money-grubber, abusive-old-ppl-nurse, pyramid-scammer face: