There is definitely something to the winning=fan complacency theory. When Michigan State hockey was so great and had been great for 20 years in the Ron Mason era (1982-2002), I went to some games in 2000-2002 when Ryan Miller was in goal. MSU has incredible teams, and sold out all the time, but the building was quiet. Enter Rick Comley, 3 years of mediocrity (2003-2005), and the building emptied out and MSU hockey fell off the map. Now that the program has regenerated itself (minus last week's disaster), several things have happened.
1. Many of the old foggies gave up their season tickets between 2002 and 2005.
2. Games no longer always sell out, but
3. as students and non season-ticket holders could hardly ever get a walk up ticket back in the day, now they can
The walk up fans decided they wanted to go to the game that night, not four months before. I think that has a result on how enthusiastic the crowds are. Munn was notoriously silent 5 years ago, and was admittedly awful in that pathetic showing against Western on Saturday. But Munn Arena has never been louder than when MSU has played well this year, even in non-sellouts. It's not crazy like Yost, but at least you could take a 5 year old without him/her learning new four letter words either.