Rachcollins
Having conducted business in Asia in the past I am well aware of the importance of " Saving Face " You only have to look at Fukushima to understand just what sort of lengths people will go to too save face.
Is it feasible that the Malaysian Airforce are embarrassed that MH370 managed to overfly the country without being detected, could that be the reason for not disclosing that primary radar returns were detected by the Navy in the Malaccan Strait ???
I have that feeling too. It's a quite plausible scenario.
Though it doesn't explain lack of comms / elt / ACARS etc. But then again no likely theory fits the current available evidence.