A better way to open stuck down MTB shock without damaging the threads

A better way to open stuck down MTB showck without damaging the threads
WEAR EYE AND FACE PROTECTION
Put the shock securely into the VISE
1. Pump some air into it to somewhat equalize the pressure and so the dampher sticks out
WEAR EYE AND FACE PROTECTION
2. Wrap road bicycle tyre around it so its servers as a "catcher" and "slowdowner" of the aircan
WEAR EYE AND FACE PROTECTION
3. SLOOWWWLLY unscrew the aircan as seen in the video