Legal question regarding dying while helping someone

This story raised a question for me:
http://jacksonsun.com/apps/pbcs.dll/article?AID=/20060731/NEWS01/607310321&SearchID=73252441897191

Would the guy who had the DUI be responsible legally for his death? I know morally I would feel guilty as sin, but can he legally be held responsible? He was drunk so I don’t know if that makes a difference or not. If he is, what would they likely charge him with?

Thanks.