UV Mapping Has Out Of Place Face

I am UV mapping a NASA image of the earth to a UV Sphere. In the UV/Image Editor I see in an unwrapping, I did while in Front View, a face protruding on the upper right which I need instead to fill the gap on the other side to the upper left. I need this so I can scale up while UVsConstrain to Image Bounds is in effect.

The protruding face is circled with the Grease Pencil in this screen shot:

Why is there this lone face protruding to the upper left?

To complete the task I would move the polar vertexes to be on upper most and lower most edges.

The Blender file is at: