Regarding the Grid and Grid V2 automatic flight paths: Is it possible to set up the flight plan and copter to maintain a single yaw orientation?

For example, I'd like to fly lines east west (90 degree / 180 degree) but want to keep the copter facing west (180 degrees) the entire flight. How would I go about setting this up?

At the moment, my platform is constantly facing the next waypoint so the transition from flight line to flight line results in a 90 degree turn to the next line, then another 90 degree turn heading back 180 degrees off of the original flight line orientation and so on. More easily put, it is flying like a plane with its nose always in the direction of travel.

I hope someone has a solution for this because one of the main advantages of using a multi-rotor system is that it can move laterally and fly independent of it's front, making mapping a lot easier since all the photographs have the same orientation.

Thanks :)