Joel Silver's vision of a live-action He-Man/Masters of the Universe film isn't going to happen. At least not with Warner Bros. as the studio and Silver as the producer. Variety is reporting that WB and Mattel, the property owner of the He-Man line, have parted ways due to disagreements. WB let the option expire this month. Mattel will take the property back and shop it to other studios. We're guessing it won't take long for them to find a home.