I actually did some Google searching on how to take this headphone apart. Friend of mine came over who is a headphone enthusiast so we tackled it together. In the end it's much easier having two hands holding the unit in place and a 2nd set of hands to put that screw back in place.
1.) Rotate the ear pad to remove
2.) Take out the four screws which now removes the cup from the driver
3.) Full exposure of screw seen
4.) Careful align and put screw back in
5.) Reverse steps to reinstall and I'm a happy camper!!! Plugged it into a source and it sounds as good as new.