If memory serves me right, the reason Mizzou backed out of game with Iowa (and it wasn't just Iowa), was because back in mid 90's, they overbooked their schedule with top teams such as Ohio State, Miami,FL, Michigan, etc. At that time the program was in shambles. When Pinkel took over, he got Mizzou out of lot of these bad games because of the Big 12 being so strong with foes as well as trying to gain some confidence for the program. As a result, basketball rivalry was dropped as well by Iowa. So yes I think they avoided the game but had legitimate reason at that point in time as they were not ready for it as a program and their athletic director screwed up.