It definitely sounds like you've over extended the CV joint and caused the joint to separate inside the boot. If you're lucky you might be able to jostle the CV around and get the joint lined back up, but if not, you've got to pull and replace the boot which is a pain. If it's out of joint it will most definitely cause about 1-1.5" of difference in getting the knuckle back onto the ball joint. For future reference it helps to wrap a retainer wire from the inner CV to the outer CV to keep the joints from hyper extending and causing this problem.
Thanks,
Rick
