If you want to reuse the nob, and this is for other reasons, (eg gearbox removal), the other way is to remove the knob and shaft complete.

Remnove the plastic surround panel, lift up the leather gaitor, and underneath you will see two pins. One stops it from going into reverse without pulling up on the thingy, and the other further down holds the stick on.

Ignore the longer one, that can stay there. Use a centre punch and hammer, and remove the pin, and then carefully (but with some effort) twist off the stick. Then you can refit afterwords in reverse.

Hope this helps!!