It never ceases to amaze me that some posters on this site are so dense that they think it's perfectly legitimate to criticize Diaz for not dumping both his entire offensive and defensive staff after his first season. Is it fair to criticize the initial hires? Yes, that's fair game. He's a rookie coach and made bad choices. Is it fair to criticize him for not having 100% turnover of the staff after year 1? No. That's a stupid criticism. He fixed the biggest problem first and then he moved on to the second part. 4 out of 5 coaches on defense now gone. So if my math is correct, that's 10 out of 11 new coaches between year one and year three. You can't fault the guy for trying to fix his mistakes.
And not firing Baker was plain good business. Not only did it turn out to be a financially savvy move and save the school hundreds of thousands of dollars, but other coaches take notice that Diaz does right by his people and tries to give them a chance to save face if things go bad.