Buy a piece of 1 1/4" diameter round bar about 4" long in brass or aluminium. Cut a 3" axial slot in it with a hacksaw (and a lot of patience). Insert this into the BB with the slot at 12 o'clock in the third picture. Place the frame drive side down on the workbench so the slot is facing upwards. Use a cold chisel as a spreader in the slot and make like a blacksmith with a nice big hammer until the shell is round enough to accept the BB thread chaser. Chase threads, you'll be good to go.

Hire the slotted piece of brass round bar out to other C&Vers as the Gaucho Patent BB Straightener.