There is a large internal snap ring just inside the housing, or "green egg" as you called it. You will need to take thie ring out, they can be a pain, but you should be able to get ahold of it and get it out with a couple of flathead screwdrivers. Once the snap ring is out, you will have to pull the internal part of the joint out with the bearing balls. Just be carfull not to drop them, they will be easy enough to put back in. Once you have the shaft and bearing center out of the housing, look on the far end behind the bearing center, there should be a small external circlip holding the bearing center on the shaft, once you get that circlip off the bearing center should slide right off the shaft.
Yours truly, sincerelly, love always, Josh aka The DirtDemon.