Bob,
I do believe one of the J30's here in Nova Scotia had their rig backed over during winter storage. Jamie, the rigging specialist at The Yacht Shop in Halifax, replaced it with all brand new standing rigging last summer, and might be able to give you an idea of cost. He's a really helpful guy, and probably wouldn't mind a quick phone call to discuss. If I recall, I do believe it was considered a write off as well, as the standing rigging is worth almost the value of the boat already. Good luck!