Well I tried to get that damn oil pump out. Even bought an elbowed socket....but alas - no go.
It appears I need a "shorter" more compact socket to get the job done....see attach.
And of course you can buy them .....30 Euros, but I couldnt find a picture.
I'm also not sure - if you actually did find one - how you would get a true torque reading one.

I have confirmed though - the oil level sensor problem is fixed!!
Is there a way to reset it once replaced - so the ECU can restart/redo its calculations on oil change interval? WIS doesnt mention anything.

Note to self - check valve pn = 112589001000