EasyBlog Admin broken after adding CDN url

As you can see from the screen grab, the administrator layout is all mucked up after adding a CDN server setting in the Settings -> General -> System, and I've not been able to use EasyBlog since. As a result I am unable to remove the CDN path using the admin module to see if that solves the problem. Is it possible for me to remove this setting manually (e.g. through PHPMyAdmin or in a configuration file)? If so, where do I look?

I have tried re-installing.