I believe your "mysterious entity" also had a hand in the price of oil. I'm not absolving OPEC, I think they're lower than snakes in the grass, but it was speculative, and I would argue not-market driven trading that ran up oil to the price it reached. OPEC only had a marginal or peripheral role in the $4.25 a gallon gas.
As for the rest of Trump's rant, I still believe that there were elements of the Saudi Royal family that bank-rolled and knew of the coming 9/11 attacks. It's one of the few instances in which I take some umbrage with Bush and Cheney. I believe the Saudi connection was swept under the rug.