I made a huge mistake on http://timeinthekitchen.com, while trying to increase the number of posts that show up on the category search results. The code I put in at the bottom of the themes functions page ended up all over my WP dashboard page and shows as the top line on my page (and source code) and I can no longer access the functions file to remove it.

I tried reloading the Atahualpa 353 theme, searched through all the files I could on the backend, but can neither find that code to edit, or get into theme files. My dashboard says theme is not available, although the site is loading it.

A mistake a won't make again, but in the meantime, any ideas at all on how I can fix this?
So much appreciated, and in the future I will attempt to not be such an idiot.

Thank you!

Quick update - when I opened the site in Chrome, the theme is no longer showing, although my second reload attempt has given what seems to be a clean copy. ALAS! Must start again....but thank you for making a theme that is so nice to work with.