I wonder how many people actually die in bike accidents....
http://www.aafp.org/afp/2001/0515/p2007.html

No I don't. "Bicycle-related injuries account for approximately 900 deaths, 23,000 hospital admissions, 580,000 emergency department visits and more than 1.2 million physician visits per year in the United States."
So .15% of bicycle injuries result in death AND..."Head injuries occur in 22 to 47 percent of injured bicyclists and are responsible for over 60 percent of all bicycle-related deaths."

I doubt it would kill the guy to throw a cog in his old hub, put a bottom bracket long ring on over that, and take it to a local machine shop and have them weld/tack the lock ring on.