Hi John,
I have checked you site and it seems like you have set these menu to contributors only. Here is my screenshot:
http://screencast.com/t/dL9zaXFU1X . Thus, this will disallows super user to have access to the edit page. So, I have done some testing by unpublishing these menu,
http://screencast.com/t/ddTi0o7S , the super user are now are able to edit the blog entry.
May I know why you have set the access to these menu only for contributors only? Because from what I can see is that this user group doesn't have access to edit and publish the entry.
Please advise.