Brian,
I just got into the admin area of your site, but I couldn't figure out your module positions. From what I could tell, the current login module was in the position 'right2'. However, when I disabled the 2 Login modules you have set for that position, the login form never went away.
The SCLogin module was also set to show in 'no' template positions, which didn't help me narrow things down.
Can you configure the SCLogin module to show in the correct position and menu item, but then simply unpublish it. Then, let me know exactly what module I should be disabling. That way, I can just unpublish it and publish the SCLogin module as is to investigate further.
Finally, the other option is to simply add the Login with Facebook button to the standard Joomla login module. You can create a template override for the layout and then simply add the following code:
<a href="javascript:void(0)" onclick="jfbc.login.login_custom();"><img src="/linktoimage.jpg" /></a>
That actually gives you more flexibility to design things how you want. The SCLogin is a great starting point for a lot of sites, but if you know what you're doing, adding the button yourself may be better for your needs.
Hope that helps,
Alex