He mumbles that under his breath because he is out of wind. The line is in context to what Brando was involved with at that time, probably campaigning for American Indians' rights. I can't remember but it made sense at the time.
K, i found this out. Marlon Brando got the Oscar for Godfather in 1973, but wasnt at the ceremony, because he was thinking that Indians were treated badly in films. The person that was going to hand the Oscar was Clint...
At the 1972 Academy Awards ceremony on March 27, 1973 (in which Eastwood presented the Best Picture award and rather infamously substituted for a tardy Charlton Heston in opening the show), Marlon Brando refused to show up to claim his Best Actor Oscar. Instead, a woman calling herself Sasheen Littlefeather (real name Maria Cruz, a former Miss American Vampire) accepted the award in Brando's name, paraphrasing a polemic that Brando had given her to read about the plight of Native Americans and their portrayal in the movies. Since Eastwood's character in The Eiger Sanction is being run ragged by his Native American female climbing trainer, he ad-libs the throwaway line, "Screw Marlon Brando!" In other words, it's a joke that would have made sense to moviegoers in 1975, but it lacks resonance with today's audiences.
By the way, Eastwood was not set to present the Best Actor Oscar, and after Cruz's speech, Michael Caine, one of the show's hosts, claimed that if a man (Brando) wanted to offer a message he ought to have the guts to give it himself.
Wow, that is some interesting trivia. I honestly did not see the show in question, and even if I had, I doubt I would recall what was said. I do like Michael Caine, and I must say he was rather ballsy to have said that. I never did care about Marlon Brando and also was not so impressed with his acting. I saw him in "Missouri Breaks" and "Apocalypse Now" and I thought he was rather stiff in both roles. If people want to consider him the best actor ever, that is their prerogative, but I would pick someone else, and Brando would fall much further down on the list. I did like his performance in "Last Tango in Paris". He definitely had a talent for doing weird characters.
BTW Michael Caine was very big in those days. Since "Alfie" he just seemed to stay everpresent on the big screen.
The Firesign Theater had their own version of the Brando affair, in which the substitute award-taker has her speech "Eat flaming death, fascist media pigs" to go along with firing a weapon into the audience. She muffs the line as "Eat fascist death, flaming media pigs" at the ceremony. although HER version seems to be more telling.