FamousMortimer, a proven insider from neogaf had this to say:

Connecting dots where they don't need to be connected.

Stig and his team spent almost 100 million dollars on a game that failed every QA test that took. The game sucked. They shitcanned the game and a lot of the people involved. They offered stig a spot on barlog's project - he didn't want to go from game director to something lesser so he quit.

This makes sense, right? Shitty game, money wasted, people fired, head guy leaves out of ego? I mean that all makes sense.

Amy Hennig has creative differences about the direction that UC4 should go in. Egos swell, she leaves. She's happy, she will make another studio much better when she gets there. Justin Richmond, an ally of Hennig's, gets an offer he can't refuse from Riot. He leaves.

These things happen. Naughty Dog is going to be fine. UC4 will still be awesome. Riot will be better with the pickup of Richmond and whoever gets Hennig will be better off. The sky isn't falling.

Guerilla Cambridge is working on a vita game that is shit and won't sell. They slim down as they retool for another project.

Again - this isn't new. This happens a lot.

The director of Driveclub doesn't deliver the game on time. Given more time the game still needs work. He is replaced.

Wouldn't you replace him? Wouldn't you shitcan stig's project that cost them almost 100 mil and had nothing of value to show for it? In fact they should have done it two years ago. The fact they let it go this far is a testament to how much they believed in him after GoW 3.

And all of this is happening before the fiscal year ends. Is sony trimming fat? Of course. Sony corporation is not in a great spot. So they are tightening up a bit. But a lot of people are connecting dots that don't need to be connected. Hennig/Richmond is about creative differences and ego. Stig is about wasted money and time. Col Rogers (driveclub) is about failing to deliver. Taken on their own they all make sense. Combine them together and you get glenn beck with a chalkboard.

And Jack Tretton was about money and inability to move up. He will make more money and have more power somewhere else - something Sony simply could not offer him. Shit happens.

It's the same with the xbox department guys. People move around. People leave for other companies. Shit happens.

And He had this to say later

Originally Posted by famousmortimer I don't know what cambridge is working on. I don't think they know. I think they slimmed down as they figure out what they are doing next. If/when that's approved, they will hire people again. Many studios operate like this. Especially lower-tier ones like GC.

I heard various numbers between 75mil and 90 mil for stig's game. I said "almost 100" because, well, both are almost 100 mil. They restarted the game, from scratch, THREE TIMES! And it sucked every time. The whole "it was too much like destiny" thing is bullshit. It was more horror-ish and like Dead Space than Destiny. That whole thing was sony jumping on the grenade to help stig save face. And help themselves save face as they wasted a fucking TON of money.