I was there (and it was rocking, especially for a December game). I believe Arky led by 9 with about 1:55 left, and still by 6-8 going into the final minute. And OU wound up winning by nine.
Hollis Price and Aaron McGhee led the charge, from what I remember.
I did not recall that game but I recall a game against Nebraska in the early 90s where OU had no business winning and somehow won. I think they came back from 9 or 7 down with only a minute left.