What are your feelings regarding Corporal Eric Casebolt resigning rather than being Fired?

Corporal Casebolt is the McKinney, TX Officer involved in the Pool Party Incident Video wrestling a 16 Year-Old girl to the ground, shoving her face into the ground, kneeling on her back, and subsequently pulling his gun out on another teen.

Here's One Journalists Opinion... DO YOU AGREE / DISAGREE?