I went to an OU-ORU game at Mabee Center in '77 when I was a freshman (and when ORU had the best program in Oklahoma, although OU took that distinction within two years). I didn't see it live, but my brother went to an NCAA sub-regional game at Mabee Center in 1985.
As I recall, several Tulsa fans showed up to root against OU, and to also rub it in that they'd beaten OU in January. I heard a couple of them brought in a banner that read, "Hey OU Fans, Remember Jan. 16?" (or whatever day it happened. Those losers got a bit too close to some OU fans who weren't going to let that go without getting pelted with a few things.
OU won the first-round game against a scrappy team from North Carolina A&T (which included one of Jim Brown's sons). The next day in Albuquerque, Tulsa's season ended in a decisive loss to UTEP in that sub-regional. So the way I heard it, some OU fan who'd listened to the TU fans' crap that Thursday night came back with a sign that said, "Hey Tulsa fans, Remember Yesterday?"