Disconnecting users from terminal services

I'm using terminal service at my home computer, and sometimes I forget an open connection from my laptop. Since I have only 2 administration connection I get 'too many connections error.

I found this post which explains how to disconnect someone remotely from terminal services:
* qwinsta /server:12.12.12.12
List connections.
* rwinsta /server:12.12.12.12 3
Disconnect session (3)