Earlier today I was trying to find a way to access a way to sign out of my Netflix without deleting the profile via the System Settings and it is possible, simply do the combo below and it'll allow you to Deactivate the account you're using to login with a different account (or just not have any at all).
Source: http://cord-cutters.wonderhowto.com...xbox-360-ps3-using-super-secret-code-0144528/
On the Wii U it only displays information and grants the possibility to log out, nothing else like the options you see for 360 and PS3.
Up, Up, Down, Down, Left, Right, Left, Right, Up, Up, Up, Up
Source: http://cord-cutters.wonderhowto.com...xbox-360-ps3-using-super-secret-code-0144528/
On the Wii U it only displays information and grants the possibility to log out, nothing else like the options you see for 360 and PS3.