Chesty
Yes mate this is the case, the SPMs sends a signal to the AFCS to disengage the AP on stick shake activation.
MVE is spot on, it's a concerning time for us Q4 drivers as to whether there's any potential issues with our birds in icing. This is a very healthy debate, and I personally have learned loads just reading these pages, but speculating about type issues is doing nobody any good. Let's wait for the NTSB findings.
D777