Anti-theft Controller problems of the 2008 Honda CR-V

I was traveling at low speed in a parking lot when I noticed that the engine had suddenly turned itself off. At that moment I noticed that the metal part of the ignition key had separated from the plastic key fob, and the plastic part, with the rest of my keys attached, had dropped to the floor of the car. After investigation, I saw that the small screw that holds the plastic and metal parts together had pulled through the thin slip of plastic to which it was attached. The engine apparently turns off if the key fob is not in close proximity to the ignition. This mechanism presumably has anti-theft functions, while also preventing anyone but Honda from selling replicate keys. In this case it had the wholly undesired effect of shutting off the engine of a car in motion. In order to re-start the car, the parts had to be precariously jammed back together, and I was forced to drive home with the fear that they would again re-separate and cause the engine to turn off. Under normal circumstances, it is impossible to take the key out of the ignition when the car is in gear, but under this apparently unanticipated failure mode, if the key fob experiences a sudden structural failure, the engine does turn itself off. This situation represents a safety hazard because of the risk that the car will abruptly lose both engine power and power steering. I was in a parking lot when this happened, but if I had been traveling at highway speed, or in traffic, the situation could have been very dangerous. It seems reasonable for the key fob to be required to start the engine, but once the engine is running, loss of the signal from the fob should not result in the engine turning off.