hardcore,
You've read the report; now go read the FCOM! You're wasting your time trying to understand what happened until you do.
For instance,
In normal law, when approaching the stall correct function is for the auto trim to stop when Vls is reached such that the pilot has to continue to hold the stick back to induce the protections.
is totally wrong. THS freezes while in normal law in some situations, but going below Vls is not one of them. That the pilot needs to hold the stick back to reach an AoA higher than alpha prot has nothing to do with what the THS is doing.