Bob Anderson (September 15, 1922 – January 1, 2012) was the swordsmaster who played Darth Vader in his various fight scenes in The Empire Strikes Back and Return of the Jedi. He replaced David Prowse due to the actor's tendency to break lightsabers. Because of the height differences—Anderson was 6'1", while Prowse was 6'7"—Anderson scenes were filmed from a lower point to make him seem taller or he stood on some small stilts.

He died on New Years Day in 2012. He was 89 years old.

not 100% sure, but i think the scene shown is not Anderson, as he only replaced Prowse in the fight scenes. that portion of that scene did not involve any saber maneuvering, so it wouldn't it have been Prowse?