He was going to play Edward Epstein, an ancestor of Morse. It was supposed to tie the religious aspect of Covenant and 3 together. But when Tess Haubrich was cast, one of the stipulations in her contract was that he be removed from the story. Now all that remains is an homage to Morse. If you look closely on the wall in Oram's egg scene, you can see the words "I hate bugs" scrawled on the wall.