You can do this by using ‘the_content’ filter. That way, WordPress will treat the content as it was came from the editor field and execute all the shortcodes:
<?php $meta = get_post_meta($post->ID, 'intSlider', true); ?>
<div id="sliderWrap">
<div id="slider" class="floatLeft">
<? echo apply_filters('the_content', $meta); ?>
</div>
</div>
Just be careful because it will wrap the content arround P tags. To solve that, you can do a simple replace to remove it:
...
<?php
$content = apply_filters('the_content', $meta);
$content = str_replace(array('<p>', '</p>'), '', $content);
?>
...
Hope it helps 🙂