Petra Ecclestone has withdrawn her request to change her kid's last name to hers and drop that of her ex-husband James Stunt ... but not before some angry filings from Stunt.
In Stunt's opposition docs, obtained by TMZ, he opposed the billionaire heiress' request in their bitter divorce to change their children's surnames from Stunt to Ecclestone.
In the docs, James argued it would not be in the kids' best interests to drop their father's name and replace it with their mother's .