Strong had to be fired, it wasn't out of spite, as he had the three worst years in a row in all of modern Texas football. Herman was an up and coming coach, and if Texas hadn't hired him, he'd have gone to another top school.
Herman wasn't bad, it just that he wasn't good - I've compared him to Gary Gibbs at OU, brought in to clean up the rotted program that Barry had left them with.
Gibbs led to a partial season under Schenburger, then the John Blake Experience, then onto Stoops. Nothing is guaranteed in life or college football.
I mainly agree with you, except TH was better than you are saying. I keep saying the same things, but the topic keeps being repeated, so....
Herman armed the grenade to kill himself last summer, and pulled the pin in allowing the post-OU experience, with Sam E as the juxtaposition, standing by himself.
As for on the field, we just weren't and aren't that far off of where we need to be. A play here or there and we would be in the playoffs. We have good talent, and improved with a new staff. We were far better at the end of the year than the beginning, and that reflects good coaching.
However..... having imploded on the off-the-field issue, the support was gone from everyone in the entire UT nation, so recruiting and money crash and burn. Thus, he has to go, because otherwise, you are betting on next year to be the LSU lightening-in-a-bottle year to stop the falling knife. Better to fire TH, and salvage the progress we did make before it's gone.
Anyway, it's the off-field issues that did him in, and he was actually a pretty good coach--on the pure "football" stuff. He will be very good for another school, just not here.