IF789,
USE MAN PITCH TRIM is a message that appears in the PFD.
It appears as well in the ECAM as a reminder but at a later stage on the STATUS page once all ECAM actions have cleared.
For the Abnormal Attitude Laws I must admit I am not convinced by the BEA statement on page 40 :
The flight control law switched from normal to alternate at about 2 h 10 min 05. The alternate law adopted was alternate 2B and it did not change again subsequently. Due to the rejection of the three ADR by the flight control computers (PRIM), the abnormal attitudes law could only have been triggered for criteria relating to inertial parameters, but these conditions were never met.
AoA data were inertial parameters as described on the traces and they met the conditions ...
Also, as
Machinbird reminded, what stopped the trim to reach the limit ?