That was the school requesting to play a second road game. Not the organizers telling a school that they would be breaking from pattern.
And theres a big difference between playing 2 road games in a row upon request, versus getting two home games in a row.
Not to mention that IU wasn't supposed to be very good that year. Wasn't exactly a big marquee game.
Why break from pattern, when you have both UNC and NC State which will offer great storylines.