Ok, so Azurinel (elementsmoviemaker from YouTube) has been speedrunning ED lately (100%). In one of his attempts, he encountered a strange glitch with Baphomet's second form that amounts to a quick kill, where the head just falls off, as if it is acting like a hand. The game then ends because that's probably what triggers the end cutscenes.
Here's the Twitch video link:
http://www.twitch.tv/azurinel/b/442815037
Check around 101:00 for the very start of the fight (first phase). At the second phase you can see the glitch in action. The thing is, we don't know as of yet what activated yet. It might have to do with the timing of the shots that open up his weak point (head) combined with how he accidentally "lured" the hand to go down, but a little bit to the left. I've tried to duplicate it, and I thought I had the right patterns, but it didn't work.
Also, for those who don't know, a work around was discovered that seems to prevent the game-ending glitch where animations and sounds loop forever and slow the game to a crawl. The solution was to set the affinity of the process "Eternal Daughter" while it's running to just one core. This is in the Task Manager, run as Administrator (Windows). Azurinel tells me he also set the priority of the program to high. I don't know if these attributed to the glitch or not, but that's basically the setup he used. He was also recording it w/ ffsplit.
Anyone with experience with the game, any ideas?? This "quick kill" saves about a minute and a half, according to Azurinel...