They very well have opened themselves to discovery, which is why it is very unwise to throw stones in glass houses when it comes to litigation. I have seen this before where a company opens a defamation suit against someone, they then don't get the results they were looking for and end up losing a countersuit or end up settling out of court because of their idiocy.

I'm not sure what they are thinking on this, but this is also the company that wired 46 million dollars to fraudsters, so its obvious they haven't made wise decisions in the past.