Clandestino asked, "Just when did he relax the backpressure? You are acquainted with sidestick traces from 3rd intermediate report, aren't you? A couple of times stick goes forward but quickly gets behind neutral again and stays there before elevators even have the chance to get to neutral."
Page 108 English report shows between 02:12:33 and 02:13:05 the elevator moved from the stop, -30, up to a peak of -15 and from 02:13:35 until 02:14:20 it again staggered towards neutral getting to a peak of -15, again. Those more or less agree with the stick inputs. (The times are approximate given the sizeof the graphs and my laziness.)
(Just providing times for you.)