bgetek on "Page won't load - Goes directly to "backdoor" editor for all themes loaded"

I was given the task to evolve a website. All was working well and without warning...Poof! when anybody tries to view site it automatically goes to the "Edit Theme" page as the administrator. when I try to navigate anywhere I get 404 Template(404.php)
The site is: http://connectmorristown.org
Thanks (in advance) for any help.