If you accept that VRS is caused by a strong vortex at the tips as the upflow opposes the normal downward flow that you (in normal flight) are trying to induce with collective - and that secondly the root ends of the blades are stalled because of the very high AoA - - -then lowering the lever fully will remove both conditions.
There was always talk of a bubble of air trapped beneath the rotor in FDVRS which would move randomly, burst and reform - it was this that caused the random pitch roll and yaw in theory.
Whether that has been proven, I don't know but it would still be interesting to see what effect going from a small parachute (rotor disc enveloped in FDVRS) with only a small part producing lift, back to your normal size parachute (lowering the lever to establish normal autorotation) would have, especially transiently.
It is this part that would answer your question Tourist - does it happen like a switch or are there a few interesting stages before normal auto is resumed.