1) the fcker deserved to die at the cabin, no doubt about it.
2) they absolutely executed him with fire on the spot - the recordings were very obvious. And if they had been executing anyone else, they would have dug in and investigated. They had a cop killer on their hands, and even in this day and age, sometimes they just let shit go. Nope, they removed all media, they cooked the place in sequence, they wanted to burn him. Not an unfair fate for such a prick, but certainly not legal.