GraphicRiver - Dispersion Photoshop Effect Action Photoshop ATN | CS3 | 2 MB http://graphicriver.net/item/dispersion-photoshop-effect-action/8992988
Watch the video tutorial on this link:
You can see how to use the dispersion effect action. You will be able to make dispersion effect on your photo.
This action file includes up, down, left and right directions.
Don't spend lots of time to create the dispersion effect manually....