Child theme – post page can't remove extra header element

Hi! I am modifying a child theme for someone, and have been able to change the main blog page header as they requested. I also was asked to make this header the same for all the posts. Because the blog page is based off of a child theme, I’m having problems adjusting it.

Basically, I can’t figure out how to remove the “sign art” image from the header on the post pages:
http://barerootstudio.com/2011/08/how-alcohol-can-spark-your-sign-painting-career/

Need it to look like this:
http://barerootstudio.com/blog/

Thought I had it figured out by modifying the header.php file, but then the format of the blog page (for all listings) broke.

Single.php code:

<div class="banner">
 </div>
    <div align="center">
 <a href="http://barerootstudio.com" title=""><img src="http://barerootstudio.com/wp-content/uploads/2011/06/barerootpeople.png" alt="Bare Root Studio" /></a></div>

<?php get_header(); ?>

<div class="content grid_<?php gpp_base_check_sidebar_hook(); ?>">

	<?php gpp_base_single_post_hook(); ?>

	<?php gpp_base_after_single_post_hook(); ?>	

	<?php gpp_base_comments(); ?>

</div><!-- .content -->

<?php  gpp_base_sidebar_hook(); ?>

<?php get_footer(); ?>

And here’s the header.php:

[Code moderated as per the Forum Rules. Please use the pastebin]

Help is greatly appreciated! I just am stumped and have gone in circles for too many hours trying to get the single.php to pull up the elements correctly.

thank you!