After reading with interest all the thread, must say that I am not an advocate of the terror act theories, it sounds too far fetched and the stolen passports looks more a coincidence than anything else.
On the other hand, it just occured to me that not long time ago Egypt Air had an emergency, on the ground fortunately, with an oxygen fire in the flight deck, eventually the airframe was written-off and by the photos I have seen, on the final report IIRC, the damage was quite extensive.
What are the odds of such an event happening again with MH370? I don't have the Egypt Air's report handy, but I guess some recomendation for parts change/inspection was made concerning the oxy system.
Just a thought