I've stayed out of this one until now. Frankly, I've been busy with work and life. I've also been thinking this shooting through, trying to think of the arguments on both sides. It's what a lawyer does, or at least should do.
I will fully admit that the Martin outcome surprised me. Not to speak for him, but I'd bet a box of .45 that it surprised DeSelby, too. But, would the outcome of that trial change the way I approach defense situations? Not at all. And I would give the same advice to someone after that verdict as I did before. I still think Zimmerman made a bad choice to leave his car, and it cost him. Fortunately for him, not his life.
Also, I freely admit that I am in general an LEO supporter. Too many years carrying my own badge as a prosecutor, working with LEOs every day. It's who I am.
Now, in this situation, I can't find a way to defend this officer. The video just lays out a factual scenario I can't find a defense for. The shooting of a man running away is bad enough. Then you have what very much appears to be the cop tampering with the crime scene by taking the taser from the spot where he had fired the shots and dropping it next to the body. You add lies in the statements about providing first aid and performing CPR on the subject...
Like I said, I support LEOs. But I have also prosecuted LEOs. And it looks to me that this one needs prosecuted.