Well, yeah, you kinda did...
And, no, it's not OK for LE, or anyone else, to wound innocent people. It happens. And sometimes the outcome is worse than other times. Doesn't make it OK. In 15 years as a cop including 13 as a police firearms instructor, it was never, ever, considered OK to wound an innocent person through what would basically be considered negligence...or for any other reason.
And there's nothing to be gained by speculating what might've happened had he not fired. Because he did fire. We have no idea how any other scenario might've played out regardless of how much you want to believe this guy saved lives. We only know one outcome...the one that happened.
OMG...that's exactly what happened (minus the "wacked-out" part). He fired his unauthorized gun at the muzzle of another gun. He had no idea what was at the other end of the gun if, in fact, the reporting thus far is accurate. And I'm gonna assume it is because I doubt he'd intentionally shoot if he knew it was a cop holding the gun.
I'm gonna bow out of this while I can still be civil. I respect your opinion but I think it's extremely misguided.