Really easy,stick the skewer part in a protected vice grip and twist,theres some pink thread-lock in them normally but its doesnt give much resistance,youll have to file down the small 'tag' that stops the thread going any further up the pivot bush to get it out of the alloy 'holey' bit but thats easy too,just put some fresh thread-lock in when you assemble again
Erm, excuse me haven't you got a Pace to finish? Here we all are waiting for your RC100 rebuild to be finished and off you go playing with a not-square bike. Crivens! C'mon man pull yourself together and finish the Pace!