Template disappeared. Main page inaccessible!

I didn’t attempt any editing of the template or anything like that. My main page just suddenly stopped showing up, replaced by “A1TS”. When I go to the templates page, the source code for the template is gone and replaced with “A1TS” also. I’m only able to get in via clicking on a comments e-mail sent to me, then logging on that way. What do I do? I’m at http://www.bluelemur.com/liberalsinexile using Word Press 1.2 I believe.