Salute!
As some have pointed out,
The big point is flaps should never be retracted with a continuous stick shaker going off. The last thing you want is to remove your high lift devices. Just maintain configuration & return to land. I am sure Boeing never envisioned a crew cleaning up & trying to complete the flight with a continuous stick shaker.
Yet the previous Lion flight did exactly that. Worse, they didn't log that or say what they did to maintain control - turning off the stab motor power and trimming with that wheel. They were "saved" by a thrid party who wasn't fighting 40 pounds of column and a vibrating yoke and going thru the stall and unreliable speed procedures. Manual trim on the yoke worked, so no big deal at first, other than the same dive that the next flight had when the flaps were retracted. Dunno why they retracted the flaps if that is the beginning of the NCC, but somehow the MCAS activated.
Gums...