All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
The husband merely signing the divorce paper does not make the divorce effective; please refer to Fatwa 87034.
As regards his pronouncing the divorce after that, if he was forced under coercive compulsion to pronounce the words of divorce and he did not willingly choose to do so, then his divorce is not effective whether it is one divorce or three divorces as long as he was forced and he did not intend to issue divorce.
The coercive compulsion that is considered in the Islamic religious law is when one is threatened to be killed or severely harmed by someone who is able to implement this threat, with the belief that the person would in all likelihood execute the threat if he did not divorce. Please refer to Fataawa 117588 and 118112.
However, if he pronounced the divorce under their (fiancée’s family and parents’) insistence without considerable compulsion, then his divorce is effective even if he did it with discontent. In this case, the divorce takes place three times if he intended three divorces, and it takes place as one divorce only if he intended one divorce but repeated it for confirmation. For more benefit, kindly refer to Fatwa 94110.
In any case, if his divorce was less than three divorces, then he may take you back before the expiration of your ‘Iddah (waiting period), but if three divorces have taken place, then he cannot take you back unless you marry another husband in a serious marriage and he consummates the marriage with you and then divorces you or dies. Then, when your waiting period expires, you can remarry your first husband. Please refer to Fatwa 82541.
Allaah Knows best.