Here's an update from the mouth of one of the horses involved in fixing this.
Blackbeard is (obviously) down right now. We've diagnosed the misbehavior of some of the server components, and are digging into why it's happening. We're testing a few different hypotheses, which is why you'll see Blackbeard show up, disappear, go from offline to locked, and back, etc.
Like rusty said, just about all of our technical people, from developers to operations folks, are working on this. We're digging at it. This isn't a hardware issue, or a network issue, or a Sony issue, it's us!
As i write this, I just flipped Blackbeard on. We think we may have nailed it. Here's hoping!