towing 4 speed dart with Tow bar

I trashed my A833 leaving the driveshaft in. Basically welded a gear to the output shaft because of a lack of oil. After rebuilding the transmission, it became obvious why.

I had some guys from MIramar in the 70s claimed this happened to them . I never saw the gearbox. This was a mopar 4 speed, they towed from Miramar E, don't remember where to.