and football in general. He had been the defensive coordinator before at BYU under Hudspeth. It's been mentioned by many who knew LaVell far better than you & I that LaVell decided to go with the passing attack BECAUSE he was the defensive coordinator & knew it gave BYU the best chance to succeed.
There have also been numerous reports of LaVell having "in-depth" conversations with other head coaches about the West Coast Offense. LaVell knew his X's & O's.
Yes, he allowed Dewey Warren, Doug Scoville, Wally English,, Ted Tolner, Mike Holmgren & Norm Chow/Roger French to call plays but LaVell knew his stuff. He wasn't "out of the loop" on the offense.
The myth that LaVell didn't "know much" should've died long ago.