This sounds so familiar. My wife did the same thing. Although I was still on the bike. We had just pulled into the driveway and she was getting off the bike. I also did have the bike in neutral and the parking brake on. She reached up and grabbed the throttle to get off and the engine hit 6000 rpms. It scared her so bad she almost fell the rest of the way off the bike. If I wouldn't have had it in neutral we would have went right through the garage door. No telling how much damage it would have done to the RT. She now grab's my shoulder or my hand as she is getting off and never ever touches the steering.