Site is all Text Based and can't get to admin page to see whats wrong. HELP

So I hit the refresh button and now my site is all text based. http://www.averageguygolf.com and I can’t get to the admin site for it which I was accessing via http://www.averageguygolf.com/wp-admin. Any ideas what happends, how to get to admin site? Revert back to an older saved version incase something was changed and messed up?

[No bumping. If it’s that urgent, consider hiring someone.]