if you can code this plugin is only a few lines of code so dont worry (the code is supplied if you fancy a nosy)
i cant be arsed doing a full issue right now but if you want to give me a email address i could send you a copy with the follwoing commands added to the plugin -
"set on theatretek exit command"
If "theatretek exit start" has been called, this command will be run when the theatretek is exited (you could use "command:xlobby:run event:system:on tt exit" to run everything in my skins "on tt exit" event group).
"theatretek exit start"
This will start a timer that checks to see if TheatreTek is running, when theatretek stops the event specified by the "set on theatretek exit command" will be run.
"theatretek exit cancel"
If "theatretek exit start" has been called, this will stop the plugin from checking for TheatreTek exit.