I had a few sets, iirc you need a tool to hold the locking ring whole you unscrew the axle nuts. A pin spanner might also do the trick.
I don’t personally and the mavic website has always been a bit of a nightmare to gather info from. Let me have a look and I’ll report back. This is all done through the internet archive and as you can appreciate it’s not always that reliable.OK, so I've managed to remove the axle but now I have no clue how to separate the freehub from the hub! I don't suppose you have the instructions for how to do that?