a33zab, I don't have the answer, but is it possible, without significant turbulence, to get these g accelerations after N1 was just decreased?
2 h 10 00 > 2 h 10 08, N1 decreases from 100 percent to 84 (or 83) percent (in response to a commanded decrease in Mach)
2 h 10 07 > 2 h 10 18, vertical acceleration varies between 0.9 g and 1.6 g.
2 h 10 23 > N1 begins to increase [from 83 percent].