True, but not really for the reason you cite (which is repeated over and over and over...
This is more likely: https://www.nbcsports.com/bayarea/raiders/why-tim-brown-blames-bill-callahan-barret-robbins-missing-super-bowl
"For a team to have a great week of practice, and then get an entirely new game plan to learn and perfect just days prior to the biggest game of the season was something almost no one could believe.
"It was a shocker to everybody," Rod Woodson said. "I know for me, I just couldn't believe it. I dropped my book in the meeting when he said it. I know in my 17 years of playing, even in the preseason you don't do that."
While every member of the Silver and Black was stunned, Robbins was the one it impacted the most. Brown believes the new game plan was devastating for Robbins.
"The guy who this is going to affect the most is Barret Robbins," Brown said. "Because Barret Robbins is the one who has to make all the calls. He is begging Callahan, 'Don't do this, I don't have time to prepare for this. Please don't do this.' I was with him, and he's begging him, 'You can't do this to me.' 'No, this is what we are going to do. This is what we are going to do.' Well, it's that night that Barret went out and went AWOL -- that night. Now, does one have to do with another? I say yes. You may say no. I say yes."
After the sudden game plan change, Brown and the Raiders knew their title dreams were over.
"So we go into the Super Bowl knowing that we don't have a chance to win," Brown said."
Robbins went AWOL.