[Plugin: Edit Flow] Unfollow a group based on status change

Edit Flow, efx_auto_subscribe_usergroup

Is this the correct method to unfollow a particular group based on a status change?

Story idea gets created, entire group id 90 is now following and is notified. Story gets assigned, all groups get dropped and then group id 88 starts following.

http://wordpress.org/extend/plugins/edit-flow/