Luc ive thot about ways to impede on that western half cant dynamite ruling out nuclear or any othar explosion (heres my idea ) mount water pipes on the crest of the volcano feed it water control the flow and just cause a slow gradual erosion on both west and east sides it might take awhile but its slow and gradual and that is what others said a little at a time would not cause a catastrophie and the erosion would be gradual and safe and in time the danger would pass but it would have to be watched constanly maybe helicopter support to hoist large chunks so that it wouldnt cause a massive slide