Problem with website templates/themes

I changed the one website template setting under account, and now its got tons of errors and I can't use most of the website due to nothing showing up. I think I hit the CSS one... ideas? Can't get into the "Account" page to change it back due to errors. I tried FireFox and IE, so yea.

I can't find the template setting in the DB, so try deleting your cookies. failing that, wait for seph.

Oh shoot, that one wasn't supposed to have been uploaded, it's was me experimenting and failing. =/
I'll delete it now (which will also switch you back)