I am sure it was a part of the choreography. He is portraying the artist Amedeo Modigliani, whose life was anything but easy. I think it was a part of the gestures to express the artist's desperation.Question, do we know why he was shaking his head in the SP? I didn't know if I was missing something! At first, I thought maybe he was chastising himself for a mistake, but I guess it was part of the program? I was puzzled.