Not relevant. So what? Was that drunk capable of fleeing and attacking anyone? Not likely. Is it hard to pursue a person fleeing on crutches for a few yards until you can kick a crutch out from him? It's not rocket science.
Sure, he was a big damned nuisance and they couldn't let him get whacko. Playing dogpile on a UNARMED disabled guy isn't ever going to be the right answer.
They mishandled that situation.