If he had help would he really have been living out of his van?
I wouldn’t discount that he had help for that reason. Good way not to leave much of a paper trail.
I have no idea if he had help, but it is hard to rent a motel or any place to stay without filling out paperwork. I have seen online that he was staying at the YMCA right by the ball park but not sure if that is true.
In his mind he may not have seen this as a suicide mission and planned to leave few clues behind.
Finally Chief Moose finds his angry White man in the white van!