I got a response from Hacktarux between visits, but he hasn't emailed me with any recovered source. I figured it was on a 13 year old machine (joke) and he never got time to dig it up. I hope that's blessing enough, because that's all I'm likely ever going to get. I don't think the other developers would be upset if the source came out, considering it's is based on unlicensed code that just appeared.
I was hoping 1964 1.1 would be a silver bullet for fullspeed GoldenEye on the original xbox. With recent progress on the 1.1 port, it proves to be not quite as fast as old UltraHLE. PJ64 1.6 doesn't do enough justice either. Those emulators work excellent for everything else but GoldenEye. UltraHLE, however, suffers a critical audio related crash when you trigger enough sounds, especially rockets/death sequences. 2064's plugin spec solves this problem.
UltraHLE Alpha changes have only a little bit to do with emulation. I see most changes related to the interface, and the smaller emulation changes don't help with audio. meh. :/
Thanks for the responses.