LARGE Stone removal?

Help! Hubby has ONE golf ball size gall stone (according to Ultrasound). Has has severe pancreatitis. He's been doing the intestinal cleanse for 1 week and is continuing for week two. Now, he wants to do the Liver/Gall Bladder flush at the end of week two of the intestinal cleans. But is frightened because of the size of the stone. Afraid it will get stuck and cause more troubles, like needing immediate surgery. Anybody on this forum ever pass a stone of this size? Sure would love to hear your stories on large gall stones! Thanks so much. Tweet