Darth Hade said:

I've always felt it was possible to save this one shot where we see Vader's shuttle leaving Bespin. It doesn't throw the music off, and you get the visual confirmation that he's made it back to the Executor. IMO, the best of both worlds

The problem is that it takes you away from the action and drama of the current scene (of Luke in peril and the Falcon on the way to rescue him) to show a virtually meaningless shot of Vader's shuttle flying back to the Executor.

You should be focused on what Luke is doing at the moment, not something that is ultimately inconsequential. Vader got back to the Executor... he took a shuttle to do it... big deal.

As an SFX shot, it's pretty basic, even boring and pedestrian. Bottom line, it does not ADD anything to the story except additional eye candy (pretty bland eye candy too)