Skyjedi2005 private messaged me this when I asked him if the negatives of the originaltrilogy still exist:

"The negatives exist but we have to take Lucas word that they were physically altered in 1997 without having the visual proof he is not lying."

"I have never heard of cgi being spliced into an existing negative. And if this was done it is almost criminal in my honest opinion."

CGI being spliced in? How is that even possible?? They would have to convert the CGI footage to film, then cut the film and insert the film footage of the CGI into the original negatives to make that work.

Something really fishy is going on here with the original negatives of the original trilogy. Is George Lucas trying to destroy them, as part of his regime to rewrite star wars history to make it more of his own? Or is it just laziness? I think it is a combination of both. George Lucas isn't sure whether he wants to continue to ruin the OT or give the fans what they want so he is reluctant to make a blu-ray release and at the same time doesn't care and is too busy stuffing his pie hole so he can grow his neck as big as Jabba the Hutt.