Full Width option

I am using WordPress 3.8 running Encounters Lite theme and WP e-Commerce 3.8.13.1. When I create a new page I have the option under “Template” to specify “Full page width”

When I create a new product in WP e-Commerce, I do not get this option. So all my products pages have a right sidebar.

How can I remove the sidebar? Or get an option when creating a new product, to use the whole page?

Thanks

http://wordpress.org/plugins/wp-e-commerce/