Hassell, a St Ambrose graduate, is the ultimate tavern hawk, and only a tavern hawk would criticize ISU fans for all the empty Carver seats.
Honestly I think he's just trying to goad ISU fans into showing up there so that Iowa looks even worse and is more ready for a change. He's done with fran like most of their fans and is in the 'an embarrassment for my team is a good thing in the long run' stage.