title: forcefully log out a specific user among all online users
body: <p>In my site administrator can view list all other online users.  </p>
  
  <p>Administrator can also disable any account from that list.  </p>
  
  <p>Everything was going fine so far. But now I decided to log out the user which is being disabled. How can I do a log out operation for a particular user from the above specified online user list?  </p>
  
  <p>NOTE: I'm using default membership schema for my SQL Server database.  </p>