[PBL] It is a little odd that the left pedal position fluctuated somewhat, whereas the right pedal stayed at max.
[TP] This could be because of the asymmetric thrust, PF attempting to steer the a/c with brakes. Is the rudder position recorded, as this may tell you whether steering was attempted using rudder pedals?
Yes, rudder position is recorded. Right rudder, oscillating between 0+ and 20+ degrees, except for a quick flip left near the end. Consistent with your suggestion, but I wouldn't like to say for sure.
PBL