Well, I came across this earlier when I was in WSG. I got disconnected while in a BG. But when I logged back in, according to WoW you aren't in a BattleGround so you cant /bg.
Also, the epic thing about this is that people can't /report afk... So this is very handy for afk'in with a simple anti afk program, which has loads on this site.
So just, when you get into WoW make yourself disconnect, easy enough. (disconnect router etc etc).
Log back in and wola.
If requested I will post a SS tommorow morning. Going to bed now.
Please don't flame me, just want to help you guys...
Also, sorry if this is a respost, jsut need one person to say "Repost" and I will delete it.
Best Regards
~Barnzy