Eeeeeehhhhh,…would it shock you to learn that the idea that OU was advanced and enlightened on race relations, much more than Texas, is largely a myth? Promoted by OU (with all of the SWC schools ready to jump in and bash Texas)?
When most schools integrated, there was a usual pattern. They get their first African American recruit, and another or two the next year, and increasingly more, the trending generally up.
OU integrated with Prentice Gauntt, in the mid ‘50s. In the early ‘60s, they resegregated for the same reason they integrated- they felt it made their team better. They thought they were losing recruits from Texas, so they stopped recruiting African Americans for a few years. They started up again as the SWC integrated.
Texas? It was the first school in the SWC to integrate athletics, starting in track. Note- the AD who made that decision was one Darrell Royal, and he was trying to integrate football, too.