My apologies if this has been pointed before, I've read all the posts but for the ones from a couple posters that I skip over some of the time.
Just to settle a minor point that has sometimes in the past been discussed, this report clearly identifies the reason for the uncommanded initial roll to right:
p.76:
La
présence de turbulences, mise en évidence par l’activité du PA pour contrôler le roulis dans les secondes qui ont
précédé, a provoqué à sa déconnexion un départ de l’avion en roulis à droite jusqu’à environ 8°.
My translation (caveat: I'm not French nor English native speaker):
The presence of turbulence, evidenced by AP activity in order to control roll in the preceding seconds, caused upon its disconnection a departure of the plane in roll to the right, to around 8º.
It was presumed by most posters that this was the case but I like to see any loose ends closed, so this is my 0,02€ contribution until the official translation is given.