In our case, we hung on to the dolphin striker immediately as the upper hull came down. Boat took off on us anyway. I don't think we righted at the wrong angle - perhaps an untimely wave pushed us that way. Regardless, we only had about 5 seconds between "up" and "moving quick..."
Frankly I was quite surprised. I've righted my TheMightyHobie18 more times than I care to admit and never had this issue...
Edit: I know the difference is due to the self tacking jib.
5 seconds is it (if you're lucky), once the boat is up you need to execute whatever plan you have to get back onboard otherwise you're off on Mr. Toads Wild Ride.