As I posted in another thread just like this one.. the instance will have to time out first. When the instance is closed, it will spit you back out onto the sector map.
I wished I could say this works and it still might but I believe too much time has passed. Majority of the time, an avg PvP queue wouldn't last 20 mins but then again, it could. We'll see, but I just checked and still login to my Fed toon. I have the same response.