Why do you guys talk about runaway trim situation, when it is a predictable situation, that the autopilot will trim hard nose down, if it is trying to level out against the "will" of full power set? And than disconnects due to the pitch down max attitude exceeded?
It is a situation that can be clearly predicted. If you are not caught by surprise.
Somebody, who has an access to a B737 sim should try the "high energy goaround in the sim"