He was pushing this idea in his speech at Duke (on BookTV). What is it supposed to mean? If it means "you can't be human without living in a body" that's a rather mundane observance. Perhaps Hegel and Wolfe are trying to be profound about a world where exits are useless.
What does it mean? It means, as I interpret it, and as my acquaintance I referred to earlier did, that you can't help but in one way or another participate in the trends and fashions of the day and act out the ideologies of the day. You can't escape it, and even if you choose to escape to Nepal and become a Buddhist monk, as Jean-François Revel's scientist son did, well, you're are still following a trend. While it's possible, nobody wants to be an outsider.