User blog comment:Legionwrex/Did the Leviathan DLC really add a new twist to the endings?/@comment-4085370-20120901054125/@comment-1958269-20120901134221

Let's also remember that the game does not save your data after you make that choice. Further proof that BioWare does not intend on making another sequel. You'd have to input the final choice at the beginning of the game, similar to the situation with the councilor in ME2.