Excerpt from the linked article: "We practiced techniques to injure players," Culpepper said. "We would dive on a mat and aim for the knee portion of a pad like it was the quarterback, and we would practice going at that and trying to bust the quarterback’s knee. You knock the quarterback out, you win the game."
Interestingly, Culpepper broke into the league with the Vikings, where this "coaching" occurred. Say what you want about the merits of the punishment - if the Saints purposefully injured players, they would not be the only ones to ever do it.
The coaches for the 1992 Minnesota Vikings Season, Culpepper's rookie season, from wikipedia:
Head Coach – Dennis Green
Offensive Coordinator/Quarterbacks – Jack Burns
Running Backs – Tyrone Willingham
Receivers – Tom Moore
Tight Ends – Brian Billick
Offensive Line – John Michels
Defensive Coordinator – Tony Dungy
Defensive Line – John Teerlinck
Inside Linebackers – Monte Kiffin
Outside Linebackers – Richard Solomon
Secondary – Willie Shaw
Some interesting names among that coaching staff.