Removing the "Login with" is definitely an easy option. The other 'quick' solution would be the following style:
.sourcecoast.login .social-login.facebook { clear:left;}
That will put the text on it's own line with the social login buttons underneath.
As for the Forgot xyz and Register links, I have no answers on that one. That page is the standard Joomla login page. We only add our buttons to it, we don't alter those links. I'm not sure why they wouldn't be working. My only guess is that registration is disabled on your site or that you have an SEF extension that's improperly routing those links.
I hope that helps,
Alex