Worst Saints Coordinator (offense OR defense) of all time

Dick Nolan, who became head coach.

Dick was well respected, like Spags, but he wanted to be an innovator. He married himself to the "Flex" defense. He took a decent defense and moved his best lineman back two yards with the linebackers. The idea was to free him from engagement with the offensive lineman at the beginning of the play so he could have better angles for stunting and more momentum when he attacked the line. The problem was offenses soon learned to run right at the flex. Guaranteed yardage. So when he got full control he went full Flex and the Saints went from an 8-8 ascending team to 1-15. That's the worst I ever remember.