You would also think that there's a good chance that the concrete hitting the ground, and smashing apart would have broken some bones, which would hurt and/or make mobility difficult for a short while, presumably until the bones repaired themselves. He just got up and wandered over to the car.
Ah well, I guess it makes better TV that way, poetic license etc
I imagine that they needed something more dramatic, and faster, than some guys with pneumatic drills, and ten minutes of the programme involving them carefully removing the concrete.