Remotely Terminate and Disconnect Remote Desktop

net use /user:Administrator \\Server.IP.or.NetBIOS\c$
qwinsta /server:<sServer.IP.or.NetBIOS> -- > list of active and connecting Remote Desktop or Terminal Services sessions 
rwinsta <ID> /server:<Server.IP.or.NetBIOS> --> reset and disconnect the Remote Desktop connections or sessions 

qwinsta = Query Window Station
rwinsta = Reset Window Station