This is exactly what the Israelis figured out and told the Pentagon before this failed interception, but the information was not passed on to units in Saudi Arabia.
As I mentioned in my other comment, my perspective as an Israeli witnessing all this was, "Don't bite the hand that feeds you." It is a shame that Americans and others had to pay a price for arrogance and politics. It may not be the official story, but anyone exposed to that world could tell you otherwise.