How did you move that far around the Lightning Pod with Perdition on Deathjack? You have to move towards the nearest model and the Pod is a model as far as I know. As soon as you start going further away, you must stop. So if the pod was B2B, you shouldn't be moving at all.
Also, why didn't the Stormwall just shoot, the turn it broke the lock?
EDIT: never mind the last point, see here