I've been cleaning up my contacts in WLM 2012 and when I am signed in, there are 47 contacts starting with the letter Q.  They are in the Social Network category so I cannot delete them.  They have no phone numbers or other details.  Initially it was 10 contacts but it has suddenly shot up.  When I sign out, they are not in the list.  How can I remove them for when I am signed in?