Passport: actually, Adam hands that over to Peter together with the plane ticket.

Oh. I knew I should have rewatched that scene before commenting! *g*

But yes, I was thinking that even Adam magically having the plane tickets so soon after escaping from the Company was already a giveaway that Peter wasn't Adam's only ally. Peter's passport, though, seems like evidence for that ally being Angela. (And the Haitian would have ready access to Adam's cell, too, so he could have dropped off both the passport and the tickets.)

I suspect that Peter would have wondered about that if the Haitian hadn't removed his memories so soon after. I'm not sure if he'll think of it now, though.