I am in favor of Good Samaritan laws. In some countries, you can actually face charges for not helping in a desperate situation where you are in no immediate danger (doesn’t apply to being unable to run into a burning house to rescue someone, for example). If the laws were better AND people actually had confidence in them (important), garbage like this would be tossed with prejudice immediately, and I believe that people would be more willing to “get involved”.
Unfortunately I don’t think that Good Samaritan laws apply to professionals.
I would say put him and his lawyer back in the wreck if that would restore natural justice.