from DeCourcy: http://aol.sportingnews.com/ncaa-basketball/story/2011-03-22/while-stacking-up-losses-marquette-found-how-to-win
Looks like the team believes that it wasn't the defensive scheme that was the problem, but rather their execution of the sheme.
Also, they realized they needed to focus on ball movement. They focused on that and their defensive rotations since the Seton Hall game. Other than against that stupid 29% foul shooter from Louisville, they have been fairly successful.