bubbers
Now what is Airbus going to do to prevent this from happening again?
Have you even bothered to read the thread
Airbus have, seemingly, already taken action in that the MEL was amended at some point recently. Whether or not the TAM amendment was in time will be investigated, even if it was "in time" I think most of us can understand why a crew may revert to the previous MEL procedure under pressure / if the amendment was not highlighted / if the reasoning behind the MEL amendment was not highlighted [the TAM accident certainly has now achieved the latter].
If you now re-run the scenario using the new MEL procedure, then most of the "theories" in this thread, whacky or sensible, are addressed and no longer possible and/or, if you subscribe to the "dream up a wheird technical problem" camp, the problem would be more apparent at an earlier stage...
NoD