With a self tacking jib, the boat just wants to turn down, easing the main just promotes that further. If you can sheet it hard dragging behind the boat it will want to round up, and/or hopefully go over. But, if it's windy, you still won't catch it unless it goes turtle, which is unlikely with no one on board.

I watched my FXone drift away on it's side in Florida a few years ago, fortunately it was at a regatta and a H16 team scooped me up and deposited me back with my boat. That was a shitty feeling.