The light branches bend under his weight, and then he just leaps forward, into the air, into nothing.
There are screams all around, but he doesn't fall, doesn't plummet, doesn't make a body imprint on the lawn like some cartoon character. He just hangs in the air like he's getting his grip.
The sun is behind him so he's a shadow. He moves his arms and legs, but I can't tell if it's gaining him any sort of direction. He drifts away, up and to the left, and somersaults in the air a few times.