If the Court satisify that, inspite sufficient service of notice, your wife failed to attend the Court, then it can grant exparte divorce decree. On later date she can file a petition to set aside the said exparte divorce decree, but she has to satisify the court explaining the reasonable causes for not attending the court.
You can change your name and address after getting ex-parte divorce and thereafter immediately can disappear for at-least an year. Let her file xyz after that .... you can give a taste to her of her own medicine
If the guy marries after the divorce.... Noone can stop him from marrying again.... And if he marries someone else, it makes harder for the court to do injustice to the girl who married that guy..... So normally the ex-parte divorces in these situations go the same in appeals......