"He's... he just makes noise. And throws things, sometimes knives but mostly pans and pots, some utensils too." Getting whacked in the head with a spatula wasn't terrible by any stretch, but it wasn't all that great either.
It really wouldn't be an issue if Isaac wasn't trying to get his head back on straight in the mean time too. But with the ghost getting a little more attention seeking, and Isaac pushing all his memories into the right boxes again, he figured it'd be easier to re-adapt if he wasn't being haunted.