Not really sure. I tried flying out of here, and that didn't work. Walk around and you'll eventually just end up back where you started. There are the doors, but those don't seem to ever lead us to our own homes or times, Good for when you get sick of sitting here, though.
You can try talking to Tony. Or maybe the Doctor? Probably Tony. I'm telling you, though, he's got no clue how to get out of here, either. Sorry.