gedney,
The VRS regime is where the rotor is fed a stream of air at a precise angle where the velocity of that air is 75% of the downwash velocity of the rotor. For a Robbie, this is about 800 fpm, and it must be aligned precisely at about 85 degrees angle of attack to the disk. ANY other angles or velocity and it simply is not VRS. If you achieve those speeds and angles while doing quick stops (85 degrees of disk angle to the air) you are really stopping quickly!
What most pilots call VRS is actually "too little power" and very nicely called "over pitching" in British parlance. A rapid power demand, faster than the throttle increase or engine accel, and the helo falls through, and the investigator pulls out his rubber stamp that says "VRS" and we have even more proof.
In reality, any discussion of VRS is a discussion of a rotor very close to autorotation (since windmill brake state is the next phase, and occurs about 120% of the downwash speed.) True VRS is extremely rare.