Originally Posted by airtren
That effect may be NULL (a), may counter (b), or may compound (add to) (c) the “inertia” in getting the “a/c” way off the “level” flight.
"Way off"... I'm not that sure (could be very few degrees on each axis)... Then a bit "off", certainly with light to moderately turbulent air (severe turbulence should have been notified by BEA). And that seems also the correct explanation (rather than fuel or CG issue) of this initial roll to the right at autopilot disconnection : rudder returned to neutral? (note = damping mode, no resistance to airflow) position, then possibly needed some correction and eventually retrimming.
As for AP/FD and ATHR corrective imputs preference during autoflight phase, it will also depend on Flight Director mode selected, that we don't know yet.
Diagram (not up to date) of the Flight Management Guidance and Envelope System (FMGS) :
