Replace the shaft with another Ping shaft , sure there must be one knocking around Ebay . Rarely do people want to buy Clubs and then have to repair/replace the shaft . A Head on its own isn't worth that much either ..........
PS . Practice your wedge play , it'll reduce your handicap faster than all other clubs (except the putter) and it will save you in driver shafts , or you could just throw it in a different direction ?