With almost 20 years experience working on Honda's rear end design - I'm well aware of the c clip you're talking about that holds the carrier in place in the swingarm.
However - he's not asking how to take the carrier out - he's asking how to take the axle out when the splined, threaded collar won't slide off the axle. If he takes the advise I gave above, his threaded collar will slide right off & he will be able to get his axle out.
If he removes the carrier, he will still have to perform the step I mentioned to remove it from the carrier, he has then only removed an additional part that was unnecessary to remove the axle in the first place.