Hell, just remove the facemasks. Nothing wrong with keeping the rest of the armor in place.
Blows my mind. We were taught to lead with the facemask. Sink your ass so your facemask is facing forward, then shrug your shoulders so the helmet gets locked into the shoulderpads and put the facemask on the ball. A lot of times it wound up being like a shoulder tackle, but if the ball was on your side of the runner it didn't. As long as you didn't lead with the top of the head you were OK. You could tell who was tackling properly by looking at their helmet. The good tacklers had torn up facemasks, the shitty ones had gouges on top of the helmet.
I'm gunna watch that video when I get time later. The minute I just watched looks like it's a much better way.