Fuck him just ignore it. He'll lose more money paying some legal boffin to chase it anyway! If the crane operator was a subby/hire also then its up to the main contractor to ensure a banksman was there.

Essentially the crane driver should have stopped the crane due to high winds.

Accidents happen thats what insurance is for.

PM me the name of the contractor as I'm in a similar game and would like to know who it was.