Revisionist historian Michael Hoffman uses the occasion to get in his digs at Zionism (calling PR a "crypto-rabbi" for example) but he at least gives some background on what PR was on about, seemingly rejecting the idea of a devil pact.
Hoffman cites the Louverture Project for his info. Apparently and perhaps apocryphally, like Washington's coin across the Delaware or the cherry tree, PR was referring to a voudou ceremony at Bois Caïman "widely accepted as the starting point for the Haitian Revolution."
Just for a dash of the conspiratorial, Corey D.B. Walker says in his book A noble fight: African American freemasonry and the struggle for democracy: "There are hints of connections between Freemasonry and the Haitian Revolution" (p.255) Haitians apparently joined Lodges in "great numbers" after independence.
But anyway, I'm not going to ride my hobby horse in the face of what is evidently a tragedy of enormous proportions. I have already received one email from a scammer soliciting donations to help the stricken.
LoS suggests that if so inclined, go directly to the Red Cross or Doctors Without Borders.