He was not displaying/showing the film and or any portion of it. He merely posted a series of pictures that were joined together to form what is made to seem like a few seconds of film. Technically he only posted some pics and the only way pictures can be considered even remotely close to illegal is if he were to post pictures from the film before ANY pictures were to be released. Even then the pictures would merely be removed from the site and no further action would likely be taken. Now were he to post the entire Spider-Man 2 film in the form of a video file on this or any other board then perhaps you could rightly accuse of him of the actions of which you speak.