Mixing animations with Ragdoll behaviour

And can I make the bones respond more or less to physics, or to the animation? What I need is a character that runs a walking animation. Then it is hit by a ball. His body responds but the bones are gradually forced back to the animation. I thought of something like doing it ‘manually’ by letting DAC provide a ragdoll and having a second armature that plays animations. After every physics tic, it would blend the ragdoll bones with the animated bones. Per bone group I would set the force of the animation.