Option 1 is exactly what I believe will happen. I believe Pym cameos in AoU as the guy who actually created Ultron, but when it goes haywire, the Avengers have to come to him for help. Hell, he might even get to suit up and shrink down to go gallivanting through Ultron's microcircuitry (like he always does) to try to fix the damage. But we don't get an in-depth backstory on Pym until a few months later with Wright's film (regardless of whether or not Pym is the title character or Lang is). The Pyms and/or Lang can then get their Membership Cards in the mail at the end of the Ant-Man movie. In your opinion. In *my* opinion, the mask sequence (as described) shows Iron Man's helmet getting beaten and smashed, not forged. And replaced with Ultron's head, not rebuilt. Since neither of us have actually *seen* the sequence for ourselves, all we have is *opinions.* Neither of which is more "right" than the other. Once we see that teaser animation ourselves, we can drop back and punt if need be.