I watched it last night so it's fresh in my mind. It was paranormal events that setup this scene and made the bully go to such extremes to begin with.

It was also one of the worst, least believable scenes in the series. The fact that he was so willing to jump, the threats the bully was giving, etc. It was just weak writing in an attempt to create a dramatic reunion. When your 11 years old it takes some time to build up the courage to make a safe jump from something like a bridge, let alone a possible fatal jump.