Yes, I remember that story from The Phantom Editor's commentary.

My feelings towards Rick McCallum softened when I heard the commentary to ROTS. He's talking about how he insisted all the stupid R2 flying about in the hanger bay footage was removed and that he didn't want the Yoda arriving on Dagobah scene cut (For some reason it wasn't cut from UK prints). But in both cases George got his way. Must have been very difficult being a Producer but with no real power to control the producion.