I don't see it that way. Looks like he was in CYA mode. First, he wanted to deal via email as opposed to the initial phone call. Second, he cc'd in the world that no, they didn't have any grounds to exam Grassley.
I agree with you. He was documenting.
And that tells me that this wasn’t the first time and he might be worried.
Bring Matt in and question him
Well he isn’t talking, that we know of, and that is the same as conspiring with her in my opinion.