Interesting.
Living or dead you have to demonstrate a legitimate interest in the records. I doubt this qualifies.
My guess is that the cop's defense lawyers might disagree.
The cop's defense attorneys aren't the ones trying to get the records. But to that case there is a precedent where a woman filed a wrongful death suit against someone who had killed her kid while he was committing a crime. The defense requested the kid's juvenile records and the woman sued to keep them sealed. But a judge ruled that the defense had a legitimate interest in them. So the cop would probably gain access for the same reason. But this guy? Not so much.