[Roger Justus]

Thought you guys needed to know, and thanks for the kind thoughts. Could have been much different outcome at greater speeds and a less isolated road.
J Clark: didn't notice any shiny spots on the metal arm before breaking. Just looked like uniform finish. Bolts were torqued to spec. Also was caliper wiggle and no unusual break drag.
Chris C: weird about yours breaking too. Under what conditions did yours give way?
Anybody know if these huggers need to be TUV approved for Germany? Are they? Any standard they have to meet in USA and Canada?
Initial impressions from you guys seem to be that it is a resonance or vibration stress fracture in the metal. Look carefully at the rough edges and colouration of the break in the first picture. Any engineers/metal specialists out there?