Never quote the New York Times as a reliable source. The National Enquirer is more reliable.
If you're a lawyer, and a good one, you quickly learn that you can only specialize in one area. So if you are to be effective you defer to and rely on other lawyers who are experts in areas where they are more expert. If the AG believes the MPAA have a valid case for protecting IP, and he he has a tight budget, using the expert lawyers of the MPAA is exactly the course I would expect him to pursue. Especially if his focus is on a parallel issue of illegal drugs on which he already has a consent decree. He wants to first prove the drug charges to the court, then show similar behavior with respect to IP, and argue to the courts that something stronger than the current remedy is required.