FOr what its worth, we sat around the campgroud trying to get the CVs to come apart. Jerry said that there is a tension ring inside the inner-inner joint that if you hit the outer wring with a hammer while pulling it apart, sometimes you can get them out.

For those that are replacing CVs, I think its a much better idea to replace the whole thing. It may cost you an extra 20 bucks each, but the time you will save in labor makes it well worth it.