[EricH]

I've seen hubs tear out of similar wheels, back in 2007, under repeated side loads (and we weren't the only team seeing that). Andy and Mark fixed the issue for 2008 and later. Never something like this though.

I bet AndyMark would just love to see the wheel for this one, along with a description of the impact (or a video) and of the drivetrain. See my comment about the 2007 wheels.