Although yours was really the first time I'd heard of this...in an odd stroke of (maybe luck), I conferred with a bud of mine who just happened to have experienced a similar thing. He said he just waited out the relock loops and after 20 mins (best recollection), it just decided to boot. In short, I would lock again and wait it out. As in up to 30 mins or more.
If that doesn't work, I might try a similar wait after trying the return to stock method one more time. I kind of thought that much time might be fruitless but I have a great deal of faith in this individual. He's not even in the ballpark of being a noob. So if it can happen to him, maybe it could happen to you as well. Fingers crossed.