Caputo just wants to situation out of mind. Its already solved for the most part right now. Why have Diaz mess it up. It's a slippery slope and Im sure we will see Caputo fall into the same trappings as the former assistant warden.
Threatening to send a pregnant woman into unlivable conditions to protect your career is even worse than anything she did.
There's no slippery slope here, he plunged immediately right off the cliff.