I can confirm the ROTS material as I saw it at midnight and I remember that. My memory is also of the ships crashing into the DSII shield, but it also may come from the ROTJ novel. The ROTJ novel is also fantastic btw and was the first book i bought with my own money then read cover to cover.As many have said, Marvel comics are to blame for many of these. I SWORE forever that in ESB, after the Falcon rips out of the hanger on Hoth, Vader said "I want that ship!" Which of course he did in the comic. But, yes in my brain James Earl Jones has said that line in the movie. I now know he never did because clearly it was written into the movie later when he says to the Imperial Admiral "I want that ship, not excuses...Admiral". But it took me years to get over that.
Another thing that has me questioning myself, but here it goes. I went to see ROTS opening midnight on the west coast. To this day, I swear there is a shot of the Emperor's shuttle approaching Mustafar after Obi Wan has left Vader for dead. I mean I saw it. Also, before he talks to Vader (newly minted in his armor) the Emperor talks to the medical droids and asks them if he survived? Then he approaches Vader from a long shot. Now either, I don't know, I was on the euphoria of George's last live action SW movie ever being shown or they cut those scenes out. Scenes of course I can never find. I actually was shocked watching ROTS mere days later in the theatre again and those scenes were NOT there, BTW. So call me what you will.