To be honest ours moved well, but the shot looks like it is his first stride when moving off so peculiar, as only the oen shot to go on. It's lovely when they get a good shot with the classic scissor view,or even brief suspension.
I think ours was having to be slowed down to avoid running up the backside of the slow-mover in front ... at least I hope that was the reason for her being strung up, ruining her forehand action.