Hardly they would have come to an agreement to start the second approach right after being cautionned of windshear on final....but time will tell.
From your description of the airline management, it is at the opposite spectrum of any airlines i have worked for..(low cost to legacy, US to Asia),eventhough some decisions had to be explained face to face and understood.
Hopefully,the airline issue on that subject will be brought to light,and such ACARS messages kept for future reference...