This is one thing you can try, You need a 1/4 drive ratchet, 3" extension for it, shallow 10mm 6pt socket, 13/16 spark socket plug in a 3/8" or 1/2" drive and a adjustable wrench or correct wrench to fit the top of the spark plug socket. Place the 10mm on top of the strut shaft, take the spark plug socket over the 10mm one now install the extension into the 10mm socket inside the spark plug socket. Hold the shaft with the small ratchet and then turn with the wrench. It works sometimes. If its really stuck you will just snap some part of the 1/4 drive setup.