Or turn off the trim system or use the trim switches to trim in the opposite direction and then turn the trim system off. I ts not like trim system can sneak up on the pilot. Its noisy and very visible when its moving. A significant amount of training is done on what to do if the trim system is acting up. Whether the "acting up" is coming from damaged trim switches or a broken stall warning or a bad AOA or the MCAS issue the pilot action is the same.