Easy Blogging Advanced Admin option

I installed the Easy Blogging Plugin and noticed that when I am in the Advanced Admin, which I work in, the header section does not expand to show section options on dashboard and the help options. Is this supposed to happen - shouldn't the admin go back to standard?

I have also installed the easy blogging wizard but haven't really had time to test it.

To deactivate a plugin in mu-plugin is it just a matter of deleting the files from the folder or is there something else I need to do?