Hi Goldenrivett,
Firstly I'll try to answer you:
Please point out the "ENG MASTER" switch logic gate on the diagram
The diagram explain the Spoiler
extension condition, not
retraction. And only in "Normal standard" operations (what if all computers have been switched Off....this is not in the diagram...then?)
Why do you think "GND Spoiler .... Disarm" is performed during After Landing Checks?
Why not simply keep them Armed ready for the next take off?
Maybe not to taxi-in and enter the apron to your parking position with the Spoiler deployed? Maybe because perhaps after low Hyd press at engines shut down, the spoiler will not totally retract due to the absence of airflow, and you don't want the spoiler partially extended during the turn around?
Do you really think Airbus just want to give us things to do and look busy during Flow Patterns?
No, I don't think so. But there are actions to be completed in a given order or moment, as per SOP,s, with no connection to any system logic. We can talk about PF disarming Spoiler before PNF switching Off the Radar or retracting the flaps. The 10000 ft flow patterns ask you to select EFIS option to constrain and LS (if applicable) ON, and it doesn't mean something will happen if you do the selection at a different altitude, and a long etc.
But again, I don't have the answer and perhaps you and Vilas are totally correct. what I'm trying to complain about is that you cannot find the explanation in the FCOM SOP,s (not even is stated there) and only a sentence in the FCTM with no more emphasis than in any other flow pattern. If they want to keep the secret to be able to share it only in the "OPERATIONAL LIAISON MEETING FBW", at least I expect something similar to a "CAUTION: Do not select Auto Brake to Max until after Flight Control Check to avoid any unwanted brake activation."
Furthermore if waiting until performing the flight control check is for you to realize that the spoiler are deployed, I think is easier to check the SD in the ECAM: In phase 2 (after engines start) Wheel page is displayed automatically and is very noticeable there the spoiler position, indicated in the same way it is in the Flight Control page.
But again, I'm not saying you are not right, only that I don't know.