As crab@ says, it's all to do with the blade sail at low Nr.
Windspeed limits are there for that reason, so if you get caught out there is little you can do.
Would you be prepared to lift up on the collective a little to slow the blades down? ....thought not.
If you have the fuel and the patience in that situation, one could always wait for the wind to die down, however as in this example in the Falklands, theres only a finite time you can stay at FI before you turn everything off, apply the rotor brake and close your eyes
Blade strike caused by the blade sailing during shut down.