I had the pinboard theme and wanted to remove the side bar theme . Most of the solutions on the wordpress forums were outdated or just too tough to implement
http://wordpress.org/tags/remove-sidebar
this link was perfect
http://www.nannygoatsinpanties.com/how-tos/wordpress-how-to-remove-the-sidebar-for-specific-pages
Solution
Edit your page
Click on the arrow on the right next to default template and choose no side bar
DONE!!