Does he have a Receipt ?
Citibikes are paid for using an iphone App. You either scan the QR code with your camera or type in the number of the bike. You can’t get the bike out of the bike rack unless you successfully paid for it. There is no way someone else can pay for the same bike, and the fact that it was removed from the rack proves that the woman paid for it and the other AH didn’t pay for it and couldn’t have paid for it. Probably it was the last bike on the rack. I wonder who took the video.