Local direction of travel (particle axis)

[Narad13]

I have this animation set up with a deer walking and I've got random faces expanding out periodically and then returning to their original position. I created this using Birth Objects, Face Fracture, etc... But the issue I'm having is that I want the faces to travel outward in the direction of the Normal of the face that they were created from. Right now It looks like every particle has the same axis alignment as the mesh that they were created from because using Particle X, Y or Z for the speed direction yields the same results as using world coordinates. 

At the moment I am using Random 3D for my direction but it's not really what I want and I'm sure there must be a way to do this.
Thanks in advance for your help!