I wouldn't be surprised if this has been found...I worked at a well-known production company's Vault in Los Angeles and my boss and I discovered extremely rough edits of Dune (David Lynch) and Blade Runner (Ridley Scott) on 3/4" tapes. These were found in the bottom of a box in a back storage room while we were "tidying up." My boss (ass kisser that he was), confiscated them after we viewed them - but the point is that they accidentally fell into our unsuspecting hands..and they sat in that dusty back storage room for years without anyone knowing of their whereabouts. They could have quite possibly been the only copies of those edits in existence.
SO to hear that this lost edit (the Holy Grail) might have been uncovered is not much of a shock to me - it is not too uncommon of a tale, especially given what happens in both Editing Facilities and Production Comapny Vaults!