The critical mistake Iowa made was elevating Forest Evashevski to AD where he second guessed every call these coaches made.
I remember WHO Radio's sports guy, Jim Zable had an evening radio show with Evy calling in from his home in Michigan after he retired. Evy criticized every play and drove the athletic department nuts. Finally, the administration threatened the station with being banned from covering the games if “Ask Evy” continued on the air. WHO Radio got the message and Evashevski finally shut up and retired.