Answer to question 1 is you can delete those pages then export the lar file and make it the default lar (default_user_private_nms.lar) by putting it in the
D:\Program Files (x86)\Nimsoft\probes\service\wasp\webapps\ROOT\WEB-INF\classes or path to your install. Then restart wasp.
You will have to deativate then delete the users that allready have logins so they get the new lar file. Which is the easiest way. Or you can manually go to users pages and delete yourself.
As far as controlling pages based on ACL I don't believe this is possible. You can create groups and assign users to that group and give them certain pages but it's a manual process to create the pages for that group as well.
Hope this helps.