[Mopp4]

The law here in CO and a lot of other states is that you are required to move to the right, except during passing, to allow the car behind to pass, no matter how fast you are going, even over the posted speed.

Well then, she was obviously in the wrong for staying in the left while videoing.
She also forgot about Colorado's Safety Rules and so did the other driver:

Use the Colorado State Patrol’s “TWO Seconds for Safety” salute to remind yourself and others to be civil on our highways. When confronted by an aggressive driver, ignore them and get out of their way. Avoid eye contact. Maintain a positive attitude when you drive!

Unacceptable aggressive driving behavior includes tailgating, weaving in and out of traffic, passing on the right or the shoulder of the highway, cutting people off, failure to allow others to merge or pass, obscene hand gestures, honking, yelling or flashing lights, exceeding the speed limit, bumping or ramming another vehicle or brandishing weapons.

Was still satisfying to see him crash....

[Balding_Eagle]

It was foolish of him to drive as he did, but she was the unprovoked instigator.

I drive professionally, and see her kind of driving several times a day. It’s aggressive driving using a passive approach, and a real danger to others.