HazelNuts39
In your graph, notice stick placement when "Pulled". The UP inputs are spikes, between them are lapses of linger in Nose Down.
It appears that his UP inputs are a severe reaction to something about the a/c behaviour. Quickly, after pulling up, he immediately reverses and pitches down; the stick does not remain in NU? What might be the cause of this actions? What is he getting from ND that he does not "like"?
Or Lonewolf?