Thanks for the replies. I really don't think there's anything I can do about it since I didn't actually hit the car, I just went on the brakes hard and slid to a stop before I reached them. I wish I had've crashed into the side of them now instead of trying to stop, then it would've been a different story.
I think what Harry said is right. Even if they did get charged (which I doubt), it would probably only be for a minor traffic offence since they weren't actually involved in an accident. I guess that makes it partly my fault too, I'm the one that fell off after all. Just the wrong place at the wrong time.