Logic experiment:

AFAIK, you can't download a torrent without participating in seeding it (at least while you're downloading it). Assuming that whomever is gathering the IP addresses is an authorized representative of the copyright holder, they are actively involved in distributing the video (at least while they're collecting IP addresses).

So, a defendant could claim "At the time you caught me downloading it, an authorized representative of the copyright holder was publishing the content on BitTorrent".

Of course, the problem is that the law isn't logical ;)