1. To return to some place in a very swift, light-footed manner. The teacher swept back into the room to tell us when the assignment was due before rushing out again just as quickly. The rebels would emerge for brief assaults on the military forces before sweeping back into their hiding places in the jungle.

2. To return to some position or status very quickly and unequivocally. The party swept back into power following landslide victories in the presidential and congressional elections. The politician's hopes of sweeping back into office were dashed by the discovery of his tax fraud.

3. To cause someone or some group to return to some position or status very quickly and unequivocally. In this usage, a noun or pronoun is used between "sweep" and "back." Often used in passive constructions. Simmering frustration and anger among voters with the current administration helped sweep the opposing party into power. He was swept back into office by an incredibly successful grassroots campaign. I have no interest in being swept back into the world of espionage.