If it happened, it was could be the all the ex-RIAA lawyers the Oboma administration put into the DoJ having dinner with their ex-chronies at the RIAA. Over a few drink, they all talk about how crappy MU is. Next day in the DoJ offices, a few calls go out to the FBI. Cronyism is powerful, and there are a LOT of ex-entertainment folks in the government (and probably some government folks who want to get into the entertainment industry who are more than willing to do favors and pull strings).