They're going to be attempting to break up the stone via special food and see if that helps, but ultimately its likely going to come down to the surgery for the cat. After the surgery, she's going to be rehoming him to a family who can better take care of his special needs where he can be an only cat.
If you'd like to help a kitty and my friend, please see this entry for further details:
Her paypal is: firstname.lastname@example.org
Thanks for looking!