Does not look discombobulated to me, he looks angry.
The problem with letting him continue doing police work is that next time he loses his temper he might end up needlessly killing someone.
Imo best thing is to fire him, the police avoids having a walking liability on the streets and Mr. Stompy can pursue a career in a different field that wont put him in those high stress situations that he cant handle.
Maybe he wont miss next time, and like Mack pointed out a stomp like that can easily cripple or even kill someone.
Safest for everyone involved if there is no next time.
Edit: when leaving the guy on the ground he immediately moves over to another guy that is clearly not resisting, still jumps straight in with kicking and punching.
Not fit to be a policeman imo, straight to jail, do not pass go and do not collect £200.
View attachment 199364