That image was not used for a single, it was used for the cover of "Best I" and "The Complete Picture" DVD/VHS. The image was cropped so that only Dean's hand is visible.
Also, the image used for "Strangeways" is from "East of Eden" too-- sort of. It's a photo taken on the set, when the actors were not filming their scenes. The full photograph can be seen in the "Suedehead" video-- Davalos is looking down at Dean, a theme that must have intrigued Morrissey since the "Best" photograph more or less has the same geometry.