User blog comment:Awayorafk/Believe. The Indoctrination Theory./@comment-186.244.38.243-20131007051246/@comment-174.52.178.64-20131011044504

Thank you, Garhdo! In short, if indoctrinated at a rapid pace, the victim will suffer from rapid mental decay, reducing them to a gabbling mess, which would be of no use to the Reapers. Shepard wasn't exposed enough to the Reapers, which would take at least a week, according to Rana Thanoptis. If Shepard were to have any signs of indoctrination, his crew would've noticed by now.

As for Harbinger uninterested, here.