User blog comment:Cpt. Carebear/best insult ever/@comment-1260687-20100301075655

Sovereign intended for Saren to go through the Conduit, and manually activate the Citadel's mass relay to bring the Reapers back, but he was killed by Shepard, and the Citadel's mass relay remained dormant, forestalling the Reapers' invasion of the galaxy.