NoD, I think he might be interpreting the "single event failure" wording as fell off at the first impact and not as a result of two impacts.
I can see how it may seem to imply that the failure occured on the first touchdown however, I'm not convinced that it was the intention of the report to suggest it.
IIRC it is only the flight safety manager or fleet manager that may overrule a grounding following an accident, pending the outcome of an investigation. I assume that the FSM/FM, was in this case happy to allow the crew to return to flying.
Can't really see why though!