On windows one useful way to boot someone off of a windows server who has logged in via remote desktop (but hasn't yet logged off correctly) is to start the remote desktop client from the command line with the console switch :
-> start ->run mstsc /console
I've been looking for a way to do this for ages with the remote desktop connection client for mac. The latest version allows you to now do this by entering the IP address followed by /console.
UPDATE: In a race to find out who could find out how to do this on Linux - my colleague Mike discovered that if you click on the performance tab - there is an option to 'attach to client' :)
Very nice. As someone who's just now getting into the gap between the two
worlds, I'm sure this will be helpful. Thanks, Kola.
And for those who are on windows, here is a very handy tool for managing
all your remote desktop connections, which also allows you to connect
directly to the console, control the display size and resolution, map
drives and ports, auto logon and more.