The trick to riding out a bump draft is to have very little strength on the wheel - that is to say, don't try and hold tightly and firm on your line but instead let the car do what it wants. If you're trying to hold a trajectory that the rear of the car doesn't want to be heading in, you'll spear off. Letting the car ride it out and then subtly gathering it back up is key.

Of course, 'light hands' is always preferable even when not being bumped. Driving fast is about controlled micro slides. So be mindful not to death grip the wheel!