Can I stop my PS3 from turning on when I disconnect the controller from my PC?

[AbigailCarter]

Can I stop my PS3 from turning on when I disconnect the controller from my PC?
I use a Sixaxis controller linked with a USB cable to play emulators on my computer. I have the libusb-win32 driver installed and the controller works exactly as it should.
Here's the problem: When I disconnect the controller, the PS3 it's paired with turns on, and I have to go all the way downstairs to turn it off so it won't overheat. Is there something I can do to make this stop happening?

 

[goforthewall]

Easy solution, but probably not what you want: disconnect the PS3 from the mains via an external power switch, when not in use ;-)