Please help me remove the Wordpress sidebar on WPG2 pages.

I did search, didn't come up with much. I have this done on another install I did but can't remember how I did it.
I have a site at www.xchangerealtygroup.com which is made in Wordpress and has the WPG2 plugin acting as a Gallery2 bridge to embed it into my website. The Wordpress sidebar disappears on the WPG2 pages but Gallery2 is still not the full width of Wordpress, it still stops where the sidebar would normally be. So the calling code must still be there, does anyone know how to write a conditional statement and which file to add it into? I want to remove the Wordpress sidebar from the WPG2 page.