http://zqktlwk5ilgohy63eyrptyb4mc76bunfmxcnstkmveyjnskxkpq3b5yd.onion/wiki/Anonymous_Communications
If they set up Azureus to use tor to proxy tracker data (NOT TORRENT DATA), they should be able to connect to your torrent. Be aware, however, that it is still possible for the MPAA to connect to your torrent through tor, and then watch the IP addresses of where data is coming from.