Blogs-mu theme

Hi - I am using this theme and noticed the option to disable the login box at the top right conrer of the page
I have disabled the login option in Theme options and this is now gone, however, the login option does not go when logged out

I want to redirect this hyperlink to the official WP-Login location as the custom option you offer in the theme does not include the extra options I have in the WP-Login screen

I am using A seperate plugin for social Authorisation as you only offer Facebook for this option.

How do I redirect the login screen to the existing wp-login screen?
Alternatively how do I inlcude the options in the existing WP-Login to the custom login page template