This is a pretty nasty hack, but here is what I did:
I modified the code for this plug-in and located the following line:
$url = get_bloginfo('rss2_url');;
I commented this line out and hardcoded my Feedburner URL:
//$url = get_bloginfo('rss2_url');;
$url = 'https://feeds.feedburner.com/GabeSumner';
I warned you, not pretty. ??