Or you could look at it as Bungie starting to get their marching orders from Sony. I.e. You are going to start justifying you purchase cost to the Playstation brand mothership sooner than you thought.
Remember a lot of that purchase price was tied into retention bonuses, which in turn may well have been tied to revenue targets...
People expecting Sony to just unload Bungie are nuts. They own the IP, and are going to want to see what they can generate using those IP's before they do anything. Losing management is neither here nor there, for a start off they are a tiny proportion of the total workforce and quite frankly trying to setup again from scratch in the current economy/overall state of the industry will not be easy.
No offence, but they've fucked off MS, and Activision already, add Sony to that list and who's left to bankroll them?