[Plugin: Sync Facebook Events] Any way to exclude FB events from posts?

When my FB events sync daily, in addition to posting them on The Events Calendar, they also post to my front page list of blog posts as well.

Is there a way to exclude these FB events from a list of posts? If it helps, my very basic query for the loop is:

<?php $args = array(
    'post_type' => 'post',
    'orderby'   => 'DESC',
    'showposts' => '1'
);
query_posts( $args );
if (have_posts()) : ?>

http://wordpress.org/extend/plugins/sync-facebook-events/