From AIN online 2011 so an input module problem can cause a loss of oil and oil pressure so that the engine has to be brought to idle, the bypass to the cooler automatically operates leading to both engine input modules overheating??
From reading the news report the engine was idled due to INPUT ACC HOT #1 caution but that would have been caused by the MGB Oil Cooler being auto bypassed due to loss of oil pressure in the MGB.
afaik
The MGB oil cooler is separate from the MGB so it is a possible oil leak location and that is why it will be automatically bypassed (pressure drop). If the oil pressure drop continues then the bypass can be cancelled as a possible leak is not in the cooler.
I dont think you would need to idle an engine as you would expect 'input acc hot #n' once MGB bypass is activated, you have the APU to fire up to provide electric power if need be if you lose a generator in the accessory, which btw shares oil with the MGB.
Without the proper report coming out we will have to wait and see what actually has occurred (as actually as they can get).