Big Orb and the Baffling Figure

Photo date: May 17, 2016. Photographer: Mark Mahin.

The photo below was taken in Grand Central Terminal in New York. We see a big blue orb above an escalator. The orb is exactly aligning with an architectural line, something I see in my photos taken here much, much more frequently than I would expect to see by chance.

In the bottom right of the photo is a figure with a highly anomalous appearance. We seem to see a purple cloud where the man's head should be. Was this a trick of the light -- or some unfathomable strangeness?