Why are you saying that "Grassley Crazy"? That's not the headline of the article you linked, and I can't see anything in his tweets that would make someone think he is being "crazy". From what I can see, he gave the accuser another day to decide if she wanted to testify. How is that acting "crazy" (which are your words, not the news story's)?

His extension of time is exceptionally generous. Perhaps he was trying to explain his reasoning. If I were in his shoes 10PM last night would have been the cut off period.