BuddyPress.org

I am trying to remove my sidebar completely from all my BuddyPress pages. I am using Thesis 1.8.5 and Marketers Delight skin. I usually can disable the sidebars by clicking a button on the page that says no sidebars and this used to work but no longer does. Do you have any suggestions. I want all BuddyPress pages to be displayed without sidebars. Here is an example from my site… http://www.thepalife.com/activity/