There's a good video on youtube of a guy in a 737 max simulator. He created the condition of the system doing this then he just off the autopilot and corrected it. He commented that if a pilot is in a fight with the automation just shut it off and fly manually.
I believe there's a confusion of terminology here. According to what I've read, the anti-stall system is separate from, and independent of, the autopilot. It 'decides for itself' when to activate, regardless whether the plane is being controlled manually or by the autopilot. Doubtless confusion on this point is fueled by journalistic assumption/sloppiness.
As far as I can tell from what I've read, the stall-avoidance system can only be disabled by killing its power source via a pair of switches the pilot would never otherwise have reason to touch - or maybe, in some cases, even be aware of.