it yanks the leg out of him in one terrible , final movement , and seth loses his mind for a bit , the horror of just the motion of it passing through his back and out his stomach , the terror that all his guts must be spilling out onto the sidewalk ( though when he looks there only seems to just be blood , blood and more blood ) , the utter certainty that his death is really here , that this really is it , that there will never be anything more - and then the driver is pushing him over onto his back .