For the uneducated, MCAS is an add on to Speed Trim.
The "Super 3 Crew" were educated!
And the fact still remains - there was not a NON NORMAL procedure available - for Speed Trim running in reverse, or any other error that they had they should have followed. A Band Aid modification of the procedure (Runaway Stab) was put together afterwards to fake a solution. Still a nearly 2 year grounding resulted.
The "Super 3 Crew" did not follow ANY documented NON NORMAL procedure - they winged it!