Costner had apparently stayed in his trailer instead of coming out for a scheduled scene, prompting Clint Eastwood to rewrite the day and remove him from it.
Scott said his father, who directed and starred in the film, never raised his voice on set and handled the dispute by simply telling crew to send Costner home.
He added that Costner returned the next day "ready to go," using the story to illustrate the work ethic and set behavior he learned growing up around his father.