RE the comments about stopping the CVR in flight ..I don't think an SOP of pulling the CVR recorder in flight is a good thing at all. With the benefit of hindsight doing so might have been in the current AF investigation but what about a hypothetical incident which unlike this one doesn't end well, and unfortunately ends up with a crumpled heap of metal under the approach or off the overrun.
Let's say an engine goes pop as it did in this case, the issue is contained OK initially and a decision is made to pull the CVR.....since the CVR was stopped we now have a well preserved record from the cruise of a thump, somebody calling for a severe damage separation checklist, a bit of T-DODAR....and then nothing....no record of any subsequent analysis done by the crew, any reassessments during the descent, any descent/approach briefing, any conversation/comments made during the approach.
There certainly seems to value in increasing the CVR recording time, and in any event a lot will be gleaned from the flight data recorder....but pulling recorder CBs in flight?