I think it's Pence, who's used the term "lodestone" numerous times in speeches and public writings.
Yeah, that's a quick pet theory, but it doesn't really hold much water. First, there's the NYT point about the source being in peril of losing their job. Pence is the one person Trump can't fire. BUT . . . see below.
Second, everything I've seen of Mike Pence reeks of self-seeking toady. Trump doesn't really consult with Pence at all, that I can see. Pence isn't part of the "White House insiders". He isn't in a position to know what;s going on in the day-to-day chaos described in the Op-Ed.
So, who? The candidates, to me, seem to be few, although there might be somebody I don't really know about. But I'll venture it isn't a Cabinet member, for similar reasons to those mentioned about Pence, with one possible exception. Think about the crew of incompetents Trump has appointed to Cabinet posts, a litany of awful people who have no experience in the fields they are supposed to administer: Carson, DeVos, Zinke, etc. Mnuchin is a worse toady than Pence is. Pompeo seems to be enjoying his newfound authority, and hasn't been around long enough to say anything. Chao is a nonentity whom i wonder if Trump has even spoken to (she is a woman and Asian, after all). Mattis? Seems doubtful.
The exception, and this is a very wild guess, without much force of confidence behind it, is Sessions. He's been vilified in terms that would have caused any self-respecting person to resign long ago, UNLESS he knows something we all don't know yet. And, for all the calumny that has been heaped upon him, Trump hasn't fired him. He fired Tillerson for a hell of a lot less.
Other non-cabinet people? Kelly? A slight maybe, but Kelly, like Sessions, has had plenty of reason to leave voluntarily already.
Back to Pence. The dark red demon on my left shoulder is prodding me to hope it is Mike Pence, despite my argument above. If that be true, and it got unequivocally revealed, that would provoke a governmental crisis never seen before in American history: An open rebellion between the President and Vice-President of the United States. That might just be what we need right now, but I'm not about to speculate on either that possibility or an \outcome.
So, who have I missed?
caw