User blog comment:CrackFoxJunior/A way to destroy the Reapers WITHOUT destroying EDI and the geth./@comment-3061137-20120802001355

If I remember correctly it isn't that Shepard gets control of the reapers in an "assuming direct control" sort of way but that Sheppard's values and ideals are transferred to the reapers and override their previous programing, since by taking control Shepard ceases to be.