I'm thinking out of the box here. Is it possible the car got tweaked, but the K frame was never out. Then taking out K frame relaxed the tweak causing misalignment?
I am now leaning toward this. Frame was tweaked, K frame held it in line but sprang when removed.
Even if you take a tape measure and catch a front frame hole and cross over to the k frame bolt both ways and see if they are the same. Then do the same but measure straight the rail up to each bolt and look for any differences.
Or, Put cardboard down on floor, use a plumb bob and mark all your measuring holes via Frame Diagram to the floor and then measure from the floor.