Siffleur doesn't quite dodge it, this blindly-fired rack clipping the side of his body. He can't feel how badly he might be hit, not when all of his body is aching and screaming from the transformation and from the lightning he took to the side. It makes it easy to charge in while Jack's tangled up, one clawed hand swiping at Jack's throat and chest and the other grabbing the loose rack to swing it around again and into Jack's side.