I wonder that there was never a statement about the uncut movie from Bluth or another person which was involved in the creation. Sometimes it seems to me that they would like to erase it from memory.
Well, Don Bluth is probably the easiest person to contact among the major people who worked on the film, and it's quite well known that he doesn't like to talk about the movie much. I think it was something to do wth the executive meddling, and cut scenes are a big issue of this (he was up against Lucas AND Spielberg on the subject of the cut scenes).
In fact, I think the only time I know of Bluth to talk about the film in recent times is in his drawing tutorials, where he gives a tutorial on how to draw Cera.
But Lucas is actually quoted as saying that the scenes were "too scary. We'll have kids crying in the lobby, and a lot of angry parents. You don't want that".
Honestly, that just makes me want to see it all the more! Either they vastly overestimated the sensitivity and weakness of the viewers, or these scenes must have been amazingly violent.