M.J.,
unfortunately not really, not 'worked' in the long term
After, gee, I don't remember and it would be too depressing to go back and look at the thread to check, maybe 10 days?, I concluded that the egg was just absolutely not going anywhere, and had our small animal vet break the egg inside of her as a last chance option. Apparently she passed it later that day but I never found pieces, she might have eaten them. She felt much better for several weeks, but about, what, maybe 5 or 6 wks after the whole thing began I found her dead one morning.
HOWEVER I have to point out that she was probably beginning to be an internal layer right from when the egg first got stuck if not before (when I was first checking out the eggboundness thing I found those little yellow rubbery blobs that seem to be a sign of internal laying and/or an infected reproductive tract). And it is quite possible that it was infected abdominal yolk matter or something like that, rather than eggboundness, that got her in the end.
So, hopefully this has nothing to do with sbox's hen
Sbox, I'm glad to hear that the egg is starting to move, perhaps some more time and baths will help. Good luck,
Pat