prone to failure at high temperatures exposes things at high temperatures...so I'm not sure what distinction you're making DY.
The Army's test results were clear and the armor clearly did not do what they expected it to. Any opinions regarding test tampering would have to have some proof behind them to indicate the Army's testing was anything but valid and truthful. Otherwise it boils down to one "expert" opinion against another and one test against another, and having served in the military I can tell you what test they'll go with every time regardless of what weapon, vehicle, product, etc... is being tested.
"You'll find that many of the truths we cling to depend greatly on our own point of view."