Technically it is trivial to fix the overload by disconnecting part of the generators (at their entry-point, not an "island mode") so that the grid will survive - it can be even done automatically in a fraction of a second, although the wind generators themselves will suffer damage.

The problem is economical/political - who will have the authority to say that we'll disconnect generator X and won't pay for it's electricity since noone needs it at that specific time.