Cameraman in quotes:
“I saw a big plume coming up, rising from looked like beyond the horizon and it continued to grow,” Leyvas said.
“It was unique. It was moving,” he said. “It was growing in the sky.”
Big event. Plume. Being widened by the wind.
“UNIQUE”, in his own words. Or “Spectacular” as the expert stated.
“Was growing” refers to the huge smoke plume, slowly spreading out, not the rocket which was very tiny at the end of the video- obviously.
He wasn't the only one to see it.
When Kelly Spear looked out the back window of her San Pedro home to see a rising orange line on the horizon, she thought it might be a rocket launch from Vandenberg Air Force Base, a sight unusual enough for her to grab her telephoto lens and take a few shots.
"I told myself it was just a plane, but I really had no idea," she said. "We have a pretty expansive view, and I've never seen anything like that before."