nanard289 Looks like metal fatiged. Are the bearings OK in the other housing? You may not like my answer but you have one hub in OK condition, Find a good machinists with good steel and have him make 3 new hubs from a tool steel if possible. IMO I would replace the other hub also because it has the same abuse as the one that snapped. Keep a spare for just in case down the road another one goods bad. If you cann't find someone there, Mark Williams can make any hub assembly you want. He has a site. Hope this helps. Rick L. Ps gald you and the car where not hurt. Question on the bolts on the hub, 2 different styles of bolts. 3 grade of one and 3 of a higher rating?
Rick