[How to] Turn off Battle.net without any programs/firewall edit.

This is done in a fairly simple way.

Basically, you whisper a person that's just about to log out -less than 1 second- and once the whisper goes through and he logs out at the same time, your battle.net will automatically disconnect.
I've tried this more than one time and it always worked.

Shorter version:
1- Tell your friend to log out.
2- Whisper him when he's about to log out.
3- Battle.net disconnects.

P.S. You can make a macro with anything in it and just spam it on that friend to make sure you get it in that last one second, it helps a lot.

Enjoy