It was many years ago with a different org. It happened in the afternoon of the second day, so we finished out the day, then went and got him at the ER and drove him and his stuff back to our place, then he had friends meet him and take it from there.
You raise a good point, and I think if anyone is doing ride sharing, especially with someone they don't know, the expectations should be discussed up front. I don't think I'd expect NESBA to issue me a credit because I decided I had to leave due to another rider's crash. Their policy is clear in that if it's you who crashes or has a mechanical, you get credit. I don't believe that extends to those who choose to leave to help. That may have to be a case-by-case situation discussed with the directors if the situation arises. Just my thoughts.