Sorry, I see the line pictured above, but the code I need to move you said is at the top of the sidebar. Do you mean the first line? Here is what I see:
<?php echo head(array('title' => metadata('item', array('Dublin Core', 'Title')), 'bodyid'=>'item','bodyclass' => 'show')); ?>
<h1><?php echo metadata('item', array('Dublin Core', 'Title')); ?></h1>
<div id="primary">
<?php echo all_element_texts('item'); ?>
</div><!-- end primary -->
<aside id="sidebar">
<!-- The following returns all of the files associated with an item. -->
<?php if (metadata('item', 'has files')): ?>
<div id="itemfiles" class="element">
<h3><?php echo __('Files'); ?></h3>
<div class="element-text"><?php echo files_for_item(); ?></div>
</div>
<?php endif; ?>
<!-- If the item belongs to a collection, the following creates a link to that collection. -->
<?php if (metadata('item', 'Collection Name')): ?>
<div id="collection" class="element">
<h3><?php echo __('Collection'); ?></h3>
<div class="element-text"><p><?php echo link_to_collection_for_item(); ?></p></div>
</div>
<?php endif; ?>
<!-- The following prints a list of all tags associated with the item -->
<?php if (metadata('item', 'has tags')): ?>
<div id="item-tags" class="element">
<h3><?php echo __('Tags'); ?></h3>
<div class="element-text"><?php echo tag_string('item'); ?></div>
</div>
<?php endif;?>
<!-- The following prints a citation for this item. -->
<div id="item-citation" class="element">
<h3><?php echo __('Citation'); ?></h3>
<div class="element-text"><?php echo metadata('item', 'citation', array('no_escape' => true)); ?></div>
</div>
<?php fire_plugin_hook('public_items_show', array('view' => $this, 'item' => $item)); ?>
</aside>
<ul class="item-pagination navigation">
<li id="previous-item" class="previous"><?php echo link_to_previous_item_show(); ?>
<li id="next-item" class="next"><?php echo link_to_next_item_show(); ?>
<?php echo foot(); ?>