Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

Ron Schuster said that it looks like Leavelle moved around to Oswald's right side by the time of the iconic Jackson photo. 

But, he didn't. Leavelle stayed put and climbed into the back of the ambulance from where he was. 

So, here you see Leavelle climbing into the ambulance following Dhority, and he is doing it from the same position as before, from that left side. He is basically perpendicular to the ambulance and has to turn right to get in. He is doing it from that left side. So, he didn't go anywhere. He stayed put.