Peter has manifested powers before, without being sure where he got them from. He can try to manifest powers he knows he should have, and he has also manifested powers due simply to need. Monroe and Peter had plenty of time to discuss their escape plans, and they might not have cared how Peter did it, only that he did . . . and that happened to be with DL's power.
We don't know what kind of resources Adam has available outside of OWI prison. He's immortal, and has had plenty of time to build up a fortune for himself, a la Connor/Duncan Mcleod style. And we weren't following Peter and Adam every minute since their escape, they had plenty of time to hit an ATM and purchase plane tickets.
Only time will tell (not much time, 3 episodes!!), but I don't think Bob and Adam are in cahoots. I think Bob is sincere, but misguided. I think Adam's vengeance against Hiro has grown to vengeance against the world. We'll see.