How will He make Zimah cease [from the land]?
Radak: Once they are exiled, immediately Zimah and idolatry will cease.
Malbim: All women will be chastised and take Musar from you, and not do Zimah like you did.
What is the grammatical form of "v'Nivaseru"?
Radak: This is a compound of Hispa'el and Nif'al conjugation. It should say v'Nisvaseru; there is a Dagesh in the Vov in place of the missing Sav. The same applies to "v'Nikaper Lahem ha'Dam" (Devarim 21:8). The verse teaches that the other Goyim will be chastised when they see the punishment for your sin and Zimah.
What do we learn from "v'Lo Sa'asenah k'Zimaschenah"?
Radak: Even though they will do [Zimah], it will not be like yours. They will not switch serving their gods for other gods, and they will not serve many gods, like you did.