Disconnect user while burning

I’ve already searched on the entire forum and on the Inet but I didn’t find a solution for my problem:
I’m developing an application that run as windows service. This application burn a DVD when a folder reach a certain dimension. If the application works when no user is logged in (i.e. during the night) everything is ok.
My problem is that “Disconnect is turned off in the system configuration (while burning)” (see pag 50 of NeroCom Nero Type Library), so if a user is logged in when the burning process start, he will not be able to disconnect.
I’ve tried to use OnDisconnect and OnDisconnectRestart events but with no succes (the process never enter on those events).

Someone could help me?