Auto Gear Lever Removal

[Supurbia]

Anyone know how involved it is to remove the shifter on the automatics, I know how to get the top cover off, but I need to replace the whole stick to fix a broken button, £25 part so it's reasonable, but how does it secure to the gearbox, work an answer assuming I've removed the chrome surround and unbolted the black plastic under it.

[Bluefox]

Would ETKA or similar help this? I've no idea, but the exploded diagram might shed some light.

Failing that, has Lummox done anything like this on a Superb/Passat/A6?