But the important thing is: another out-of-control cop is off the streets, and public is safer for it.
I personally think the officer may have been redeemable after some discipline and receiving re-training. But it's risky, and I don't blame the department for playing it safe - he showed a propensity to escalate to preparation for deadly force, unwarranted & in a flash.
Guys like him (if uncorrected) cost their departments (and ultimately the citizen taxpayers) tons of money & time in lawsuits, while costing their departments huge losses of goodwill, to say nothing of the injuries caused the good citizens.
Already several civil suits have been brought forth, I suspect with more to follow. There's no reason for the citizen taxpayers to be both the victims of his behaviour, and the responsible parties to his financial liability.