Stab trim moves in a direction I don't want or expect. I don't give a toss about what causes it. MCAS or PFM. I'm trained to move the stab trim switches to cutout, pull the handle out and start cranking it so that I bring the aircraft back in trim at the target attitude and adjust the thrust according to the memory items for unreliable airspeed. They were not incapacitated as they were on ATC coms till the end responding to multiple unnecessary calls. It is instructive that the previous crew turned the stab trim switches off and landed safely.