Adelle theme – 2nd blog page sidebar misformatted

Does anyone know how to realign the sidebar on a blog page?

My blog is http://keepingitequal.com – if you click on ‘blog’, the side bar is now listed underneath all of the blog posts instead of on the right hand side.
If you click ‘older posts’ you will see that the sidebar is formatted correctly.

How do I fix this?

In the past I contacted the original creators of adelle and they said they do not provide support.

Anyone know how to fix the code?
All the other pages the sidebar is placed correctly. It is just the most recent blog post page that is incorrect.

Thank you!!