If you pinned his leg up against the pole the cabbie backed into, that outta do it. The pole has a small enough surface area to act almost like a blade with so much weight (car) behind the impact. (Especially if it's one of those metal ones for street signs, more so if it's one of those square ones. Craziest thing I've heard of in a while. I'll be staying tuned to this one.
Now... day 2 of the Great Basement Cleanup, now that the waters have gone I can sanitize it.