Joint Flex How Do I Remove The Rag Joint On A '73 Mustang?

How do I remove the rag joint on a '73 Mustang? - joint flex

Has anyone done this specifically on a '73 Ford? To remove the steering column intermediate that contains all of the material (loose coupling), there is a lock screw below the joint of the steering gear to be separated, but I can see where you are disconnected from the steering column, somewhere near the firewall . Any help is welcome. Thank you!