they made a major mistake in promoting Littrel.
Lebby was already hated at OU for his shitty offense, and he was the brains of the offense. He knew he was hated, and so he took the first ride out of there to MSU
Venables decided to promote within for some consistency, its not wrong when the offense is working well but DG was putting a lot of work in to make things work. Littrel is the shitty version of Lebby who architected their offense. Now that its not working he doens't know how to fix it, and they having some freshman at QB who dont have the experience either and a new offensive line who also doesn't have the depth or experience to cover deficiencies.
We've seen how this works out with Charlie Strong, and its spectacularly bad. With the portal era its possible to fix the issue more quickly but these are not quick fixes. You also need a name at OC to attract people.
We again saw this with Charlie Strong, and we had to fly our AD to fucking nowhere's ville to entice some shitty OC to even take the job , who was over paid, and fired a year later when we fired Strong.
What I'm hoping to see is a similar set of issues, we see Venables fired next year after another shitty year and OU really stuck in a hard place trying to figure out what to do next combining with churning through Offensive Coaches and Offense Schemes that really sets back the OU offense for years.