This is just something that is a little unusual. When I was having my bike dynoed, he turned the key off to stop the bike, and noticed that it still was running. Then he took it completely out and revved the motor. I haven't had the balls to try this myself going down the road, since what good is it? But it is strange.

Yep, it's a bit strange but understandable when you realise that the key switch is just another input to the CPU. It seems to think that, as long as we're still moving, it might as well do all those housekeeping chores it was designed for. It will stop the engine as soon as the rear wheel stops turning.
Discovered this rolling into my driveway and turned the key off for a quick dismount and she kept running until I was completely stopped. Definitely got my attention.
The kill switch is also only a CPU input but it's designated an "emergency stop", so kills the engine immediately.

Yep, go for a ride and turn the key off, bike will continue to run until you hit a stop sign or red light. Bit weird.