RWA
You need to read it again and also read up on the flight control laws, there was NO THS "misbehaviour". The A/C behaved as it was meant to. The unusual attitude training coves the fact that the THS may be in a position other than optiminal and "manual" pitch trim may be required. The PFD also has a "use manual pitch trim" message in amber.
In Perpignan they unfortunately did not follow the correct flight test schedule and paid the ultimate price, it is beter to be late in this life than early in the next.
Unfortunately there is NOT enough information about AF 447 to fully see what happened but the THS moved under the pilots direction due to sidestick input. There are also a few comments about the bank being uncommanded. Possibly not as it is surprising the number of pilots that whilst doing the pre-flight control check are unable to just move the elevators or just move the ailerons without making an "uncommanded" input on the other controls. It is regarded as "What's the problem", well that can lead to poor control discipline and could "possibly" have been the initial cause of the roll/bank that needed to be corrected.