very unlikely, Witnesses weren't in the same position as the camera no doubt and are basically human Perhaps they only saw the end when your son nearly knocked him out? Perhaps they only saw the beginning and the end? Was there sound on the video? Perhaps the witnesses were in a noisy environment and didn't hear everything either.
Nothing more will come of it, i'm sure so your son would be better just thinking about what he's done, what a lucky escape he's had, and how to be a calmer better person in future



