Hehehehe, yeah, he did.
The hypnotist, the guy asking for directions, used a technique called 'mirroring' along with some powerful suggestions. He's pointing in the same way as the guy, bending forward to get his attention. Then he takes a few steps back and the guy responds by moving towards the hypnotist again. This means he's got the attention needed and so he goes on giving more suggestions.
Notice how the hypnotist is mumbling some things in between in a very natural way (as in not demanding, but just kindly asking) and after doing all that he has the full attention of this guy, thén he makes the last suggestion of giving him his belongings by handing over the bottle and wanting things back in return. The latter is a psychological thing, it's very natural to give something and expect something in return. The guy at that point is so confused that he's even willing to give all his stuff.
The guy walks away, convinced he had to give those things and convinced the guy himself was asking for directions (because of the mirroring technique), instead he was tricked by the hypnotist Derren Brown.
Lol, not once, but twice.

The bottle came into play the second time, triggering the same attention at once and Derren Brown was able to pull the stunt of again. Great stuff!
By the way, for those who believe it can't go (nearly) wrong (and perhaps even become insane), take a look at this most interesting video;
http://www.youtube.com/watch?v=qEuKgEjwi6AI'm pretty sure the guy would have gotten serious problems if Derren didn't act upon it like he did,
Cheers