http://zerotracker.com
I looked into it and there are 16 leechers and 0 seeders, so it's going to take god knows how long to get it. I'd also like to know if he was using a first generation VHS and if he did any digital cleanup, because it definitely would need it.
"Twice Upon A Time" (the unedited version) is probably one of the truest "lost classics" there is, considering it was Lucas. It's a great candidate for a preservation effort, since it is unlikely to ever see the light of day.
Someone out there must have a better-than-VHS copy...