That's the way I heard it too. Potter intended to use the taser because of the danger of shooting the wrong person accidentally, not necessarily out of any concern for the criminal Duante Wright.
I saw an interview with a police instructor which poked a hole in that defense. He noted several errors in the attempt to arrest Wright that, if done properly, might have changed the outcome. The officer attempting to handcuff Wright didn't follow procedures which would have given him physical dominance over the criminal. When Wright broke free, Potter's duty under use of force protocols should have been to assist in physically restraining him. When Potter immediately went for her taser she skipped that step, which the expert explained opened the door for a claim of excessive use of force. Grabbing her handgun rather than her taser further demonstrates that she was not qualified to be in that situation. My take away from the whole mess is that the officers involved were poorly trained and she just happened to be the one left holding the bag. If she had followed use of force rules (physically restrain, then taser, then, if appropriate, deadly force) she never would have been charged. I expect an appeal and a lighter sentence for her, with the defense pushing hard on her lack of proper training. It's unfortunate that Daunte Wright will be remembered as a BLM martyr, rather than the violent criminal that he was.
As for the claim by Rockhead that white people don't get pulled over for expired tags, my blond, blue-eyed, very white wife got pulled over a few years ago for expired tags. Since she didn't get violent with the cop and she didn't have outstanding felony warrants and the cop could pull up her registration on his computer and see that it was current, she drove away without a ticket. The only use of force was when she got home and head slapped me because I hadn't yet put the new registration stickers on either of our vehicles. In my defense, they had only been sitting on my desk for two or three months, which is hardly enough time to climb to the top of the honey-do list.