Originally Posted by DennisMik
Are you sure that a piece of the coil did not break off and stay on the spark plug? This could prevent the socket from gripping the hex portion of the plug.
If you remove the valve cover, this will bring the spark plug into the open where you could maybe grab on to it with vicegrips or something.
Use a 6 point socket, not a 12 point socket.
The coil is intact fortunately-it was the first thing I checked because I hoped it was something simple. I did use a 6 point, but as I said, it just spins and cannot grip at all. I'm trying to avoid getting into the motor at all, but if necessary the valve cover may be doable. I'm just glad its on the front.
Upon closer inspection it looks like the hex section has become completely rounded and there is some rust. Im really considering trying to get my hands on a deep Grip-Tite or extractor socket, but I'm just hesitant because I don't want whats left of the surface area to crumble.