Yes, he's doing the Heisman pose.
This photo came when his grandma took him to the new Sports Museum of America on Monday for their Family Day.
The Heisman room was a highlight, but he also got to hold a Ken Griffey bat, try doing play-by-play of famous sports moments (not quite) and a ton of other stuff.
I have to say, the museum is amazing for kids -- and any sports-fan parent will love it, too.
On your next trip to NYC, I highly recommend it.