Mr. Murphy was the producer for Iron Man when the rights were with New Line, but the film stalled after rumored star Tom Cruise read the script and turned the role down, saying it wouldn't be any good and wanted nothing to do with the film.
At that time, Nick Cassavetes had been hired to direct, Grough & Miller (Smallville) had written the script and New Line greenlit the film for production, but for some reason as soon as it started in stopped and a few months later Marvel took control of the property and soon hired writers and Jon Favreau to direct.
Murphy took it very hard, possibly that he wasn't hired by Marvel to produce the new film at Marvel/Paramount, so naturally, instead of saying "oh well" and moving on Murphy started a smear campaign on his website, he got more courage after the success of Transformers, which he produced, unfortunatly Iron Man succeded and we haven't heard much since.