Yacht Veloz needs Help!

My Morgan Giles 30 ,Veloz, has a problem! I noticed that water was leaking from between the iron shoe which supports the lower end of the rudder and the hull. We managed to remove the first part of this shoe which was held by two studs however the main part which is attached to the keel could not be moved and i could see no solution to removing it. The Boat yard at Gosport
had a go and apparently have now punched the lower end of one bolt up into the inaccessible bilge!!!! Has anyone else ever had to remove this item how did they achieve this and what did they find when it was removed?