I commented on this a couple of pages back. He's probably just trying to escape a big-ass explosive shock wave gaining on the ship.
I imagine when the Citadel started exploding, or doing whatever it was doing, Hackett would have ordered the remaining fleet to pull back out of range.
Or Hackett gave them a secret order.
Or EDI's self-preservation instinct kicked in.
Or they were loosing so the fleet dispersed.
By the way in regard to your answer, where is the rest of the fleet? Just an idle thought.
Also do you guys think that BioWare is trying to redesign itself from their RPG (and story driven) roots into a company that make "modern", "current" games? And/or is this something that happened with Coca Cola and their New Coke in the past?
C'est la vie.
[Edited by Zurvan, 3/14/2012 6:19:55 AM]