[grumpysnapper]

An expensive weekend on the dirt.
Very suddenly let go, (luckily) on the entry to a moderately slow "chicane".
Initially thought it might have been due to a rock strike, but where it fractured is well protected by a large exhaust mid mount muffler (I think the vulnerabilty to impacts would be much further along the shaft closer to the diff).
It was fitted about 2 years ago so I'm not really sure how to properly or realistically diagnose the failure.