Folks, I was not the FO on that flight.
I am glad to hear that SAASFO, otherwise you would have been guilty of breaking the cardinal rule of CRM; bleating about fellow crew in public (and before the enquiry is done). That established, you seem very sure of the sequence of events, seems perhaps that either the P1, P2 or P3 confided in you. Let's scratch the P1 as I think perhaps you have an issue with the skipper, as your thread would indicate..
However, that is one aspect of the incident, and a very small aspect at that, but taking a handful of thrust and driving an A340-600 off the runway into the dirt is an entirely more serious aspect and one that will be very hard to justify.
That
very small aspect you refer to is the FO muddling an ATIS message that clearly warns "Taxiway Alpha is closed" and interpreting it as "Parking Bay Alpha is closed" ??
The skipper, guilty of not remembering the Notam, may have been lulled into anticipating an easy exit onto 34 (only a 30 degree turn) added to which is a bad ATC bad habit of sometimes referring to 16 as 34.
An accident/incident investigation is like analysing vegetable soup, many little parts make up the whole. It seems, from armchair length anyway, that poor CRM may be one piece of the vegetable.