When the local federal court in Northern California issued its injunction (which applies only to the area of jurisdiction of the court), it prohibited the pledge altogether until a final decision could be made - instead of just removing the offending phrase.
Why?

Joe, if you are asking why this particular decision was made, what do your local gummint spokesfolks say when you ask them? What legal issues was the court asked to address, and what did their opinion say about how they chose what to impose? What did each side ask for, that might have led the court to this particular approach in the particular case they had at hand?

~S~