“IIRC Goetz told a neighbor that he was the shooter.
She turned him in. If he had kept quiet he would have been safe from prosecution.”
Not according to Mr. Goetz.
He stated that he drove to New Hampshire and turned himself in to NH police.
The police were already looking for him and had a search warrant for his apartment around the same time that he turned himself in.
I guess this would mean that you're both right.