You can't blame Brad if the OC had no plays that got Keyshawn the ball in the end zone. They actually had no plays to get the ball in the end zone at all!
I am sure that BJ had the authority to call an audible once in a while. He should have called Keshawns number every time they were in scoring position. Especially if he had a one-on-one matchup, it wouldn't matter if he's open or not, throw it up there!