This is what Senators do. When the reporters are in their face, they act like they're statesmen, and talk about integrity and stuff like that. But the bottom line is that when the rubber meets the road, there's no way they can remove Trump, or even harm him politically. There is too much riding on the 2020 election, and not even the squishiest GOP senator wants to be in the minority, or have a Democrat in the White House.
Whether they like him or not, Trump is the driving force behind the 2020 election, and it will be epic. And they know it.