There are a lot of reasons why the Saints' 2013 season will be SPECIAL

I agree that he is an amazing OC, but are you saying that he normally doesn't study film? I get that being "away" for a year enables him to focus more on film study, but if he could not contact anyone in the organization, would he have been able to get the same quality of film if he was the active Head Coach?

Yes, but he also had to budget time for gameplanning, installation of game plan, managing his staff, public appearances, dealing with media, meeting with Loomis, et al, etc. There are only 168 hours in a week, and he had to sleep sometime. However, during his suspension he was likely able to sit on his couch and watch the game film undistracted for as long as he wished.