Well, normally I'd say SHIELD swooped in to take care of the body, but since there is no SHIELD anymore he would probably be in some hospital morgue while some geneticist or mutant expert is either on his way or waiting for them to transport the body to a different hospital. So yeah, he would be in a morgue right about now while they're either getting ready to move him somewhere else or waiting for some guy who can tell them what the hell Grundy is to show up.