Matty, that movie is in Nesticle and it's been around for quite a while. You can download it
here. I don't think it's really cool by our TAS standards though.
Food's right about swordless vs sword-abstinent. I made the same point in some
other thread, and I'm still waiting for you guys to tell me which Nintendo Power issue that was.
Yes you can use up+A in Ganon's room, and I think a few minutes added onto a half-hour run would be worth making it much closer to swordless.
Last week I tried to think up a better solution by maybe bending one of the site rules. I figured we could use a well-crafted game genie code to make Ganon vulnerable to the boomerang (or other weapon) without affecting other parts of the game. To conform with the rules, the published AVI would involve Link going all the way up to Ganon, acting like the movie desyncs, and dying. However, those who view the run in an emulator would have the option of putting the code in before the final battle and see Link truly kill Ganon without a sword. This is actually the reason I contacted the Zelda Challenge author last week, and as I mentioned above he certainly wasn't much help. Another issue is that there's no guarantee that such a patch could be done only with an elegant single-byte change (a single game genie code). Requiring a whole handful of codes would take away the charm.
Actually, just now I thought up a cheesier solution. Try the same idea as above except use a code that turns the door above Ganon into a bomb-wall and have link just walk away from the final battle. Personally I think it would be a lot cooler to kill Ganon somehow, but at least this method is likely to entail only a single-line game genie code.