By restricting the movement, protests will not stop. The IDF will then have the excuse to use more force against the protesters, than what they have used so far. Mostlikely, this will radicalize some protesters and they will use force too. Now Israel has won: it can say to the world "we need to defend ourselves" and "see how violent they are" Great excuse for more hostilities against Pals and in the eyes of many, the protests will be delegitimized.
U.S. warns governments, bankers Iran sanctions still in place (Reuters)
from the article: IDF declares West Bank protest villages a 'closed military area'