Why would Bourne reveal to this guy that he is in his office?
This seems completely ridiculous to me.
It seems like he wanted them to chase him. He just needed his name on tape and then he could hang up the phone and get the hell out of there.
the same thing happened in the second film, where Bourne stays in the hotel room for too long, although he knows the cops are trying to get him.
of course these make sense for the movie to have the chase scenes, but they ridiculous in the sense that a top level high IQ secret agent would not be so risk seeking, willing to risk his life so easily...
anyways...