That is a crazy story. I haven't been in anything quite like that, but I have seen people put themselves into dangerous situations for others, without thought. I would hope, that if someone I cared for was in trouble, someone would care enough to be there for them if they can.
As a mother, you might not want your son to put himself in danger, but also be glad he did. At least, since he is okay after.
As a mother I was horrified that he had that terrible experience, but I could not have been more proud of him.