KW and DT both like to get up field which may be the issue against the run. Nix from Notre Dame might be the move in the 1st and then rotate MD and KW at the other DT spot and DE on occasion.
You're correct, every player that isn't an angel turns into Aaron Hernandez and Travis Henry. Some people change and others don't, MD is an elite talent and should be given the benefit of the doubt.
Or that 23 year olds are not perfect and sometimes need to mature. Plenty of players have acted like idiots early on and overcome it, plenty of teams have overcome jerks in the locker room to win the Super Bowl.
PSU should have been crippled by the sanctions and ensuing exodus of recruits but went 15-9 over his two seasons. I would say that is a pretty solid job.