That was a bad day!
I also had the thread of a QS freeze and not want to unscrew. The first time it happened I could unscrew it with a lot of effort, but the second time it seemed impossible. It was sticking someone out but I could not even screw it back. It wanted to take it worlds as a backup, but I wanted to put a Trompo plastic cap on it. So I ended up sawing it off . . . which was a bad idea. It is now by my lathe, waiting until I have an idea of what to do with it.
I am curious, Jeromy, what exactly is your avatar?