I've set the info.plist to have an LSUIElement key value of 1.
As described here:
If I fullscreen the virtualbox application using the green fullscreen icon, it will take the fullscreen but have no menu bar associated with it. I can exit back to the normal desktop area using command-tab but then VirtualBox is not visible anywhere from within the dock. I can get back to VirtualBox using mission control.
Once in this state, short of logging out and logging back in, is there a way to un-fullscreen the virtualbox window? or quit virtualbox?