Redirecting users to front-end login instead of /Sitefinity/

Update: Some clarification - by "front-end login," I mean the main Login page that uses the login module. 

So, we've launched our new web site and discovered a few issues, specifically with employees who have discovered the direct link to a page that requires you to be signed in -- bypassing the "normal" login and being presented with the Telerik Login Page (see attachment).

 The issue we discovered is that while the user specific users do not have backend access, they are shown as being logged into the backend.  Because we have the license where only 2 simultaneous backend users can be logged in at the same time, I am prompted to kick one of them off before I can access it administratively.  

Is there a way to prevent both customers and employees from seeing this page and simply being directed to our normal page with the Login module?  Thanks for your help!