This has never been about Wellman's pride. He asked Bz to do something with the program (part 1) and then expected Bz to win at a Stevens-like level once he got a team of his players (part 2). Bz did what Wellman asked so in Wellman's mind, Bz was successful at part 1. And I don't give a rats ass about what he asked Bz to do and it really doesn't matter, it was asked and Bz was given slack to do it and he did whatever it was. But Bz is now not winning and has failed at part 2 so he's gone.
Bz was going to get his chance and that was how it was going to play out from the beginning. Wellman was not going to go back on his word. The onus was on Bz to succeed with his kids, not Wellman. It's now a VERY easy decision to make and we move on. Maybe after he's gone and all the hate fades away, more people will realize it.