Scratch that, it's this cable: http://www.robotshop.com/en/replicat...e-x-motor.html

I played with the wires some more and figured out that cause. When I held the motor cable a certain way, everything suddenly functioned as normal, when I let go of the cable I started having issues again. There's obviously a short in the cable. Problem seems to be solved.

RCSubGuy, this should help you out too.