If you look at the picture carefully, you will see that Rick is drawing the back of the cock feather to his nose. The string is on the right side of his nose. Both of his eyes are on the same side of the string. Rick feels that his sight picture is a very important part of the shot, and has never mentioned in his videos or in conversation with me that any part of the bowstring is visible as a part of his sight picture, so I believe his bow is canted just enough to get the string out of his sight picture.
In the past, I have had trouble hitting left, and one of the causes I've explored is the possibility that my right eye is to the left of the arrow. Rick has discouraged me from worrying about that, emphasizing that the important thing is to have a fixed, repeatable placement of your head, as opposed to getting your eye over the arrow. He told me that the out-of-focus point of his arrow is slightly to the right of his target in his sight picture, which seems to tell me that his right eye is slightly to the left of his arrow.