I have many friends in the ISU band, and their director told them that the rumor that an IU band member was pushed and broke their ribs, is 100% false. That information was gained as part of reported conversation between the two band directors that happened after the game.
An Iowa band member did break their ribs; they fell down the stadium stairs (not pushed), and landed on their bass drum. That sucks for that individual, but the foul-play associated with it is 100% false.
If they landed on their bass drum, they’re likely still rolling. Which direction were they going? The U of I needs to find out and send an investigative team to the likely destination in an adjoining state to find out what really happened.