Thanks for that pointer. Good old Trekcore!
At the very bottom of the page, check out "ALTERNATE ENDING II". Despite the low picture & sound quality, that is probably the best idea how the first cut finished. Much better editing than anything among Generations' DVD extras. As a fan, I'd love for someday them to put back footage, even as a supplementary Disc 2 version... The possiblities rival what was achieved with Alien 3 and Superman II The Donner Cut.