It is reasonable to think that the Altgen photo was altered before being released. Why was Doorman, if it is Oswald, not removed completely at that time? Was someone else supposed to be the patsy at that moment? Did those who altered the photograph check the photo for giveaway clues to the shooting but did not know who Oswald was and what role was being prepared for him? Did the right hand not know what the left hand was doing?-
I have answered your question in a blog post, and here's the link to it.
Of course, the photo alterers knew who Oswald was and that he was the patsy. But, to some extent, the left hand did not know what the right hand was doing. For instance, the photo alterers did not know that Lovelady had lost a lot of hair. They were in possession of the Wedding photo of Lovelady from the 1950s, which they used to give Doorman a new hairline.
But, they did not know that Lovelady had lost a lot of hair since then. They didn't have a current picture of Lovelady, and nobody told them. They should have made Doorman look like this image, which shows a lot less hair.