I went to see Spidey 2day. It was good but anyway, near the end as the osbourne is talking to spidey in the goblin outfit in the building and the little flyer pack is behind spidey. Just as the pack thing was about to hit spidey the film didn't just melt, it caught on fire. It was great. No one was harmed, it was so funny. So I had to watch about 20 minutes over again but I finally saw the end, I liked it.
Sorry to hear about that tragic happening,but at least they didn't can the rest of that showing,and allowed you and the audience to see the whole,very ending.Happy to hear that you also enjoyed the movie.
And,as you can tell by the boards,your partial revealing of the ending isn't really too much of a spoiler(only if you know the entire plot of "Spider-Man 2" ahead of us,though).