As far as I know, the reps offered remained the same from when they were first offered (around a month ago I believe).
If we had wanted to completly destroy echelon we wouldn't of offered them any terms at all, I can assure you, if those Echelon nations were wanting to leave Echelon they would of prolly done so a long time ago, through surrendering indivdually. They have stuck with their comrades through 2 months? of war.