LOL... Please stop with all the excuses! This is total BS!
If a pilot flying an aircraft manually decides to follow a false capture of a G/S and start descending at that kind of rate prior to the usual G/S intercept point and only stops because of an EGWPS warning then both pilots should be terminated!
What are we paid for? What are you trained to do? Where is your airmanship? When flying an aircraft you just can't be sitting oblivious to nothing and let the automation fly on its own without supervision.
It is very clear that this crew did not take seriously the warning on the ATIS nor the warning from ATC and allowed a minor situation to develop into a possible catastrophe and that perhaps only the EGWPS saved the day.
Brief the approach, brief for the warnings and BE READY to react to any problem, no excuses!
You people with all these excuses make me sick!
End of rant.