I think thats how they actuall put this together, Erik--in 1983.

The shot of Vader walking down the hallway is from elsewhere in the film, probably as he confronts the guards. The shot of him entering the elevator is probably from the same scene, or another one. The awkward cut to the meditation chamber (how did he get there? does he just have these all over his ships and death stars?) is because there was no shot footage of him entering the chamber. The actual shot of the chamber is an outtake from Empire Strikes Back. They then edited together unused alternate takes for the voice over.

Hamill wasn't around so they filmed a double playing with the lightsaber. Anthony Daniels was shot seperately as the only other original footage for the scene and the composited over another shot of the double and R2.

I thought there was some dialogue in there but maybe there is not.

Put together and you have a whole scene where you've only filmed three original shots. They add in a lightsaber optical, John Williams scores it. Then it gets cut out.

One possible version of history.