its not likely prosecutors would fail to get things filed on accident, since this would likely be one of the more memorable cases in their careers. Likely pressure is the reason.

New Mexico is a very corrupt state, maybe even more corrupt than this state, lots of corrupt cops, Nevada is bad as well but New Mexico is worse. I worked with a guy who had been a deputy in rural Nevada, he had some good corruption stories, but the worst ones I have heard are from a WSP trooper I knew who worked as a deputy in a North Western Montana town near the Canada Border he said nearly every cop he knew was getting cash related to drugs coming over the boarder,