temeraire threw himself forward , roaring , and the buildings , weakened already by fire , began to shatter as the divine wind struck : the center of the walls collapsing inwards and the half-burnt roofs falling after them , until the whole went tumbling forward in a sudden crashing wave of burning tinders , a great blinding rush of orange sparks and ash spraying up , very much as from a fire stuck by a poker and stirred , and buried the guns and the men with them .