A bluff charge, which is common in unplanned bear encounters, is a sign that he/she is not really all that psyched about you hanging around. The accompanying article isn’t clear on how quickly they left after the bear made it known it has no plans on sharing lunch. Granted, they couldn’t do much once it started for them. Let’s hope there was some pepper spray at the ready off-camera.
I think their guide may want to re-think just how close he lets his guests get to the talent.