This effect was generated in Filter Forge, a Photoshop plugin that allows you to create your own filters.
This filter creates a particle diffusion, dispersion, wind, and motion effects with soft lens and full tone controls. Click and scroll filter "Comments" in library to see many picture samples. Enjoy :)
Diffused Diffusion Disintegrate Disintegration Disperse Dispersion Motion Particles Scatter Scattering Streak Streaking Wind