My understanding of this incredibly long thread is that "turn the trim off with those conveniently located trim switches" was exactly the wrong thing to do in this situation and was one of the reasons for the crash. The proper steps, as I understand this thread, are "use the electric trim to undo the nose down inputs from MCAS and then turn off the electric trim." How that would be the proper procedure for a true trim runaway is not something that I understand, if the electric trim is in fact misbehaving then you would want to disable it immediately rather than screw around on the off chance that there is something in the software logic that you don't understand.