It's not a curse. Marty just needed to sit down with Bill Walsh and Don Coryell for a weekend and learn how to really ATTACK a defense all out all game long the way Walsh and Coryell did it. That third screen pass to LT that was picked off should have been a deep route that looks like another short pass but then LT turns it up field deep. Marty is just not an outstanding offensive coach and he could only win the Super Bowl with a truly great defense or just a weak year in the entire league.
But I thought Cam Cameron did all of the offensive play calling, and Marty didn't interfere? That's what we've been led to believe all season.