Gallery Plugin – Want to remove sidebar

Hi, I am using the Gallery Plugin. On my gallery page, using the gallery template, the sidebar is wrapping to the bottom of the page and showing search, pages, archives, categories and meta. I do not want to show the side bar at all. I would just like to display the album covers. I have searched for a solution, but the few things I can find are from at least 2 years ago. (Searching on “gallery plugin” pulls up results for every gallery plugin there is!) In the instructions I found, it says to remove <?php get_sidebar(); ?> from gallery-single-template.php and gallery-template.php. I have removed that line, but it has no effect. The sidebar still appears. I am using Atahualpa 3.6.4. The page is located at: http://www.crossroadsowensboro.org/site/gallery-template/

Thank you for your help!