I'm replaying the scenario in my head....Would make an awesome movie scene but I doubt very much that's what really happened. I mean, you'd have to have an intermingled frontal cavalry/infantry charge, where somehow the infantry was keeping up with the cavalry and that's assuming the pinball effect is actually reached.
On throwing the bo, I remember hearing somewhere about this tactic of hurling a big ass bo the size of a small tree trunk into the legs of incoming horse. Not that it would take down a horse, rather the animals would bounce it around through nearby footmen like a pinball machine from hell. I've always been curious if such a thing would ever have occured.