I am pretty sure the witness in the video taken at the scene that morning before the roadshow came to town did actually describe him running , then doubling back and charging at the officer. He didn't know the kid, he didn't know the officer, he was just telling his friends or neighbors what he just witnessed, and he may not have even realized that his friend's phone was picking up his conversation. He's not a witness that I would think would have any special reason to try and cover for the police - he was just a guy living in the complex. Some of the other witnesses have said they moved to a different window, or pulled their car over, or reached for their cell phones, or hid behind vehicles, or ran downstairs for a better look, etc., etc. This witness doesn't say he did any of those things, although he could have. I guess it's just hard for me given all that to try to say why this first-person eyewitness account would not be credible.
ETA: I was trying to quote someone. Haven't totally got the new forum down yet...apologies.