When the opportunity finally presented, he abruptly pulled him directly down backwards to his back by the nameplate area of the jersey. This is based on the NCAA rule since 2017.
There is nothing in the rule that states that if a runner manages to resist a horse collar tackle attempt at first, the ultimate abrupt textbook pull-down from behind is negated. Whatever rule or custom you personally act on is not the issue.
You must not have gone through the play slowly, as I suggested. Or the gif used to illustrate the new rule where the player is slung not pulled, forwards not backwards, and lands on his side not his back. Agree to disagree, my friend.
It pales in comparison to the way we were jobbed by the officials in the Bama game. That was the most crooked game I have ever seen. That's where the focus should be. Agree to agree on that.