The truth of the matter is refs are extremely incompetent. Every team in at least one game during the year will get screwed by a dumb call or two or five made by the refs. This is why it's important coaches keep the players' minds right if a call doesn't go their way. It was clear in the first half our guys were frustrated with calls.
Pete Carroll's defensive philosophy is great. He tells his corners to be super physical/handsy (not to the face) every play because he knows the refs won't call it every play. Adjust to the refs