[Plugin: 1 Flash Gallery] Pushing sidebar to the bottom of the page

Hi all, take a look at https://businesswebsite.toneysolutions.com/. No matter what theme I try, the plugin will push the sidebar to the bottom of the page and sometimes the footer to where the sidebar should be!

Reducing the width of the plugin doesn’t return the sidebar to where it should be.

Is there anything that I can edit in the theme to make this work properly?
The theme used in the above example is Thematic and I can provide any file from it if necessary.

Thanks