I'm trying to remember too, but i'm pretty sure you have to remove the cv and boot from the wheel end, then slide the boot from the diff end down and off the other end. Only one end of the CV will have the 1" diameter hole to pull the boots off correctly. There is a circlip in there somewhere, but i can't remember where exactly.
Anyway, remember you have to start from the wheel end and work your way backwards into it.