99 4.6 is superlocked and won't reset

My 4.6 has the engine locked down and won't cut off the security system. Basically the car thinks it is being stolen, regardless of the fact that I hit the unlock button on the key or unlock the door with that same key. The alarm goes off whenever I open the door and the code letting me know the engine has been locked comes up on the dashboard. It has been like this now for several weeks and I am running out of options short of getting it towed back to the nearest dealer, which is 200 miles away.
I called the dealer in Atlanta where I bought my RR new 6 years ago and the service dep’t says I need to bring it to them to have the computer reprogrammed. Considering the difficulty of getting the car back to them, I surely wish I could find a better solution. They tell me there is no other way to resolve this as they are the only ones that have the software to reprogram the car.
Are there any other options?