If that's the standard Joomla login module (mod_login), then JFBConnect isn't adding the social login button there on it's own. Can you describe what module you're using or how the Facebook login button is being placed there? Once we understand how its getting there, we can provide more details.
For information on the Easy-Tags, you can see our
Easy Tag listing
. For login, the tag to look for is {JFBCLogin}. Without knowing how the Facebook button is being added there, I can't really give you any suggestions since I don't even know if the Easy Tag is being used or something else.
Thanks,
Alex