Could it be that Eli is safe at home, but Jace doesn't want us to know that "the mission was a failure" and therefore he keeps Eli off of social medias (Probably by withholding the Xbone) until we forget about the mission ever taking place?
That would be rather clever, so I doubt it's the case. I mean, these are the guys who openly admitted to conspiracy to assassinate a foreign leader on twitter. I don't think they'd have the patience to maintain such a ruse anyway.