Let me first preface what I am about to say. This is not me saying the team will win or compete these week. This is not me downplaying how bad that showing on Sunday was as it was horrendous, this is not me being a homer or unrealistic.
If you go back and rewatch the defense at least (yes I am a glutton for punishment) the mistakes are in theory correctable. As many have said over the last 24 hours, Bobby McCain bit on every playfake. If you are supposed to be the deep safety and you aren't deep, that causes an issue if a defender was beat. The Raven's passing game was legit deep safety bites and WR beats a CB that was lined up out of position.
So in theory if the team shores up their technique that should be correctable. In practice? That's a different story. Minkah,Bobby,Wiltz, and Rowe have to show they can do better.