I think that Vee's death at the end of Season 2 and Suzanne's inability to deal with it (given that she has the mental age of a 6 year old) probably goes a long way to explaining her behaviour this season. As to the guards and what the prisoners are getting away with, I think, again, that Caputo trying to be the 'good guy Warden' goes some way to explaining that. Then you've got the place being bought by a corporation that doesn't care about the inmates, but is essentially turning it into a money-making venture, hiring poorly trained part-time guards and overcrowding the prison which I think again is why the prisoners get away with more. The guard aren't trained to handle them, and the ones that are seem more concerned with their livelihoods being destroyed by the corporate takeover. My own opinion is that it's still good, but nowhere NEAR as good as the second season was. Also fuck Piper. Seriously. She's the new Larry.