They'll almost certainly tell you that it is toast, dead meat on a stick, bereft of life, gone to meet its maker, it is an ex-frame. Liability will suggest that and common sense about that amount of damage will support it.
I'd say it's time to start shopping for a new frame. I know that rear end failures are not as epic as front end ones but I would not trust that frame to haul my butt around the block anymore let alone across town or down some trail in the middle of nowhere.