Part of that is because of injury, part of it is because of more attrition this week and part of it is because comeptition has changed the complexion of the conversation in some parts of the roster.
NU got an exemption to bring Mick Stoltenberg along even though he can't play, so the Husker roster is technically 75 players.
Redshirt freshman reserve outside linebacker Guy Thomas is not on the trip. That could be an unspecified injury or other situation, but it naturally draws some interest considering two other players have left the program this week.
The running back group didn't change except for the subtraction of Bell, who left the program late this week.