Google CardBoard: How do I rotate the orientation?

I need to show the scene in a tablet that will respond like a phone but with the VR MODE off. the problem is that in the tablet it will set the orientation in a way that I have to move it in portrait mode and not in landscape mode ( even though in a phone it will work in landscape mode like it should ).
Is there any way to control it? ( rotate it by 90 degrees perhaps? )