If the follower leave before the leader does, the rest of the party members doesnt get kick out and it works.
Is there a way to send a cmd that the run is done to the client/follower and triggers leave party before the leader and give the leader a waittimer?
Check out my new release. It should work for you, it does for me.

http://www.thebuddyforum.com/demonbuddy-forum/plugins/153896-plugin-simplefollow-fork-arden.html