Display All but One Category

Is there a way inside this code to add something that display all but one category on a page?

<?php

add_shortcode("loop", "myLoop");

function myLoop($atts, $content = null) {
extract(shortcode_atts(array(
"pagination" => 'true',
"query" => '',
"category" => '',
), $atts));
global $wp_query,$paged,$post;
$temp = $wp_query;
$wp_query= null;
$wp_query = new WP_Query();
if($pagination == 'true'){
$query .= '&paged='.$paged;
}
if(!empty($category)){
$query .= '&category_name='.$category;
}
if(!empty($query)){
$query .= $query;
}
$wp_query->query($query);
ob_start();
?>
<ul class="loop">
<?php while (have_posts()) : $wp_query->the_post();
/********** Edit Below This Line **********/ ?>
<li>

<h2 class="blogTitle"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
<div class="blogMeta">by <?php echo the_author_meta('display_name'); ?> | <img src="http://www.singleinstilettos.com/wp-content/uploads/icon-comments.png" alt="Comments" align="top" border="0" /> <a href="<?php the_permalink();?>#comments"><?php comments_number( 'no responses', 'one response', '% responses' ); ?></a></div>

<div class="lcp_FeaturedImage"><a href="<?php the_permalink(); ?>"><?php the_post_thumbnail(); ?></a></div>

<?php the_excerpt(); ?>

<a class="blogReadMore" href="<?php the_permalink(); ?>">Read More...</a>

<hr class="blogDivider" />

</li>
<?php /********** Edit Above This Line **********/
endwhile; ?>
</ul>
<?php if($pagination == 'true'){ ?>
<?php wp_pagenavi(); ?>
<?php } ?>
<?php
$wp_query = null;
$wp_query = $temp;
wp_reset_query();
$content = ob_get_contents();
ob_end_clean();
return $content;
}

?>