Maybe such information is on the way.
I hope so. It's not the fundamental issue here, but it's salacious enough that we need to get the clear facts.
Maybe Trump didn't grab at the wheel at all.
Maybe Trump grabbed at the wheel and then accidentally made contact with the agent as he fell back.
Maybe Trump struck at his ear instead of his clavicle.
Maybe Trump grabbed at the wheel and then grabbed at the agent in a ft of fury.
Maybe the events conveyed to Hutchinson were exaggerated in the retelling.
Maybe she made the whole thing up.
There were larger issues in play that day, but this issue seems reasonably easy to resolve. I'll obviously accept the direct testimony of the driver over Hutchison's as she admits her knowledge of that event was second hand.
But it needs to be public and under oath.
[Edit] Clarification. I want to hear from the driver not Tony Ornato. Not saying he can't testify, but I will base my judgement on what the driver says.