A ploy too far
The merger between the Likud and Yisrael Beiteinu could certainly lose Netanyahu the vote in the Likud Central Committee.
The leader of the National Religious Party, Moshe Shapira, was badly wounded 55 years ago when a hand grenade was thrown into the Knesset. He added "Haim" to his name and lived 13 more years, surviving several governments, whether the name change had anything to do with it or not. It's a religious custom.