Not really. This is actually pretty common elsewhere with USCIS (e.g. AOS cases sitting in limbo for years), you start a mandamus suit against USCIS and lo and behold, your case makes it to the front of the line and gets approved within a few days of you serving them a summons. I wouldn't be surprised if there's a special team somewhere whose job is to intercept and turn around cases they get a mandamus suit for.