he was going down based on momentum from being blocked
Did you even watch it? No he absolutely wasn't. He ran at least 5 steps after knocking down Stevenson, he wasn't blocked into him at all. He dove low, instead of coming in higher. He had more than enough time to come in higher, problem was if he did Jones would have had the ball out by the time he got there.
100% a penalty based on how it's written in the rulebook