"Has anyone had experience of this phenomena?"
Yes, engine failed without any prior indication of problem, or obvious engine damage.
As per the Ops Manual recommendation of "No obvious damage" etc., relight was successfully completed, resulting in normal operation.
As a precaution, with the reasoning that it wouldn't have failed in the first place unless something was wrong, I returned to the departure airport.
Approaching the circuit, it failed again. (FCU problem with slow air bubble accumulation in a pressure chamber).
I rest my case your honour
Regards,
Old Smokey