The power run plays must work in practice or they would not be using them. The same plays that were successfully used at NDSU. So it is likely the players or the coaching, or a combination of both. I was talking to the local high school offensive line coach about the lack of power run offense. He commented that the struggles are not unexpected with a freshman center no matter how much potential he has. Which brings up the question why was not there a center already in the pipeline in year 4 that could step in?
I would expect there will be changes in the offensive coaching staff, with the replacement(s) probably being coaches Bohl has closely worked with in the past.