I've used the auto-switch since it first was implemented. If you're on the side with absolutely no opportunity to find a fight, you can switch to either of the other sides. You won't be able to switch back to auto-switch, or to any other side, until the timer expires, but you would have to be online for a very long time for that to make a difference.
I believe I've done this twice. Usually I'm able to find a fight, even if I have to pick a long range aeroplane and cross a sector or two.
- oldman