Made ANOTHER fix to the disc. Changed the timing on some of Jabba's subtitles, but most importantly fixed the "watch film without Oola scene" option. What you actually see on the disc doesn't match what I see in DVD Studio Pro when I create it (again, no idea why) so my timing for the chapter breaks that would allow you to skip this scene were a bit off.
Now it's fixed, and I just watched it that way - seamless! This leaves a shorter edit of Oola's fate than the O-OT version actually has, but it's essentially the same, and seems quite natural watching it.