inverting the lethal apex of the steel spike downwards , he pounced toward mitch donald with such an aggressive swiftness of movement that the senior advisor had absolutely no time to react ; thrusting the entire length of the cone-shaped spear so forcefully into his abdomen , that its tip penetrated straight through his spinal column before protruding clean out the other side ; his still quivering and open-eyed carcass buckled to the floor .