Creative Engagement Photo Showing Superhuman Strength

San Diego-based wedding photographer Aaron Willcox won 1st place in an engagement photo contest with this shot showing a feat of incredible strength. No Photoshop trickery or invisible wires were used in making this image (nor does the guy have Superman-esque strength). Can you figure out how it was done?

(via Photoxels)

Image credit: Photograph by Aaron Willcox and used with permission