Chewtobacca said:
What's the source of the untweaked shots (apart from the trailer)?
The source for the untweaked shots is the making of featurette included on the 2003 DVD trilogy set, so better than LD but still 4:3 letterboxed and interlaced material, the boulder scene should be in its complete form, not sure about the well of souls bits. The tweaked shots were all from the same DVD set btw.