Exactly, force with force. If someone’s beating you while trying to get your gun from you, you’d better assume they intend to kill you with it, and not shop around on your belt for the most fashionable piece of bling to deploy on them.
Furthermore, you have a desperate subject who has just tried to kill a cop fleeing (fleeing, that is, if you believe the proven liar of a witness, who has already been shown to be Brown’s criminal accomplice) the scene—you’re bloodied and bruised from the beating, your ears ring from the shot inside the car—you’re going to risk the danger to the community, and merely HOPE such a giant, murderous beast is safely captured later?
Why would the officer think he could man-handle a moose ?Some has suggested, Brown was high on violent drugs.
The time for a plan was as soon as he identified the perp.
OBTW; Are you familiar with the 21 foot rule ?