Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh.

 

By issuing the phrase of divorce in this case, the wife becomes divorced. Pressure is not a form coercion. In order to be a case of coercion, there must be an explicit threat of killing or severely injuring the husband, the one who issued threat is able to do it and the husband do not have any means to ward off this harm.

 

In this case, the husband can revoke divorce and return back to his wife. He must not listen to his parents if they do not have a valid and legal reason for divorce.

 

Almighty Allah knows best.