Hypersmurf
Moderatarrrrh...
I was just saying going backwards 2 squares and then forward seems like a start/stop situation, so you use 2 move actions.
Certain types of movement carry restrictions - a push can only be away from you, a pull can only be towards you, and a charge must be directly towards the nearest square from which you can attack the target.
The Walk action does not carry a restriction on the direction you can move - you can walk one square north, then two squares east, then one square west, then two squares south, for a total of six squares of movement, all as part of the same Walk action.
-Hyp.