The guy was obviously a bad actor who posed what they considered a lethal threat. That said, the K9 being released at that point was either a mistake or piss poor judgement in the use of force.The other consideration, and we see it all the time, is that the dog had a schitty "out" ( that is, to release the bite.)
The K9 fits roughly into the use of force continuum at the level of a baton. Nobody was swinging fists or batons at that moment... They're gonna have some explaining to do.
I'll take it from the expert here.
Mighty mighty poor optics at a minimum.
I'm sure glad in the case of mistaken ID that I was a part of, they didn't have a dog/handler combo there like that. Instead, I got complimented by the original officer on how I did "everything right"................very similar to the bite victim there before the dog was released.