Lost All Formatting Suddenly (Unstyled List of Links)

My page is: https://www.blacklungbeats.com

Although I may have updated a plugin, I made no changes to my code and all of a sudden my site has lost all column formatting, it’s main header image, and now there is a giant list of links all left-indented including my admin bar.

From reading past forum results, it seems like the issue could is likely within the footer.php, header.php, or functions.php.

As a result I already deleted my functions.php so that it pulls from the original Twenty Eleven theme. I’ve saved a copy otherwise of the one I had in my child theme.

Here is a copy of my footer.php (I can send the header.php if that would seem to be more useful):

<?php
?>

	</div><!-- #main -->

	<footer id="colophon" role="contentinfo">

			<?php
				/* A sidebar in the footer? Yep. You can can customize
				 * your footer with three columns of widgets.
				 */
				if ( ! is_404() )
					get_sidebar( 'footer' );
			?>

	</footer><!-- #colophon -->
</div><!-- #page -->

<?php wp_footer(); ?>

</body>
</html>