you have to edit your forumjump-template
and after that you have to edit forumdisplay.php the first part of the file where the forumjump redirects are..
the permissionsystem, was just an addon to the original hack, to allow Admins to also Archive private forums and don't let the wrong users inside. that's why it uses that behaviour.
but normally it should work, as i've tested it.
Nevertheless it's a RC, so i'll look into the code again