Post pages get rid of side bar column

http://sydney.onlinehubcenter.com/news/

for posts pages how do i get rid of the right sidebar column so the content expands the entire width of the page content. For non posts pages this is easy but i don’t see an option for posts pages.
thanx
-tony

Hello there,

Do you have at least one active widget instance in Sidebar box in the widget administration panel (Appearance > Widget)?

Regards,
Kharis

I use a plugin for sidebars called “custom sidebars” I don’t use the native theme sidebar.

Hello there,

Thank you for getting back.

Is this the plugin I can test and troubleshoot?

Regards,
Kharis

yes, this is the correct plugin. thanx