(Skips most of what you wrote and locks down on a specific issue.)
Grassley tried to rush the Thursday Hearing forcing it on Monday and forcing the rules to rules he prefers instead of negotiating the rules of the hearing. You can really see this last Thursday and Friday, especially if you read Grassley's tweets.
Grassley did not want a hearing, and if a hearing occurs it would be a hearing where he got to set up the rules.