No. The arm action is more pronounced at the front to compensate for the fact that the front knee is virtually touching the chest at the point of max extention of the rear leg and the aggressive backward arm drive, which, due to torso position here is mostly upward, not only helps generate the initial force, by action/reaction the upward arm action keeps the torso down lower.
That said, there is still an attempt to maintain some bend in the arm on the backswing to help initiate the return.