Auto "Off"
There is, there is mate, yu would normally, auto pilot off and autothrottle disengage, you would then have manual control, its two moves - but not one universal button yet. If you want to disengage the `brain` of the system giving you indications on the Primary Flight Display (PFD) just select FD (Flight Director) off, and then you can fly the aircraft raw - like a little aeroplane (weighing in at 60 tonnes or more).
All of the right hand column of the FMA will be blank.