Sharing on social media

We share photos of our kids on social media to family and close friends, certain things I don't share - bath photos, school photos ect so send those directly to grandparents but grandma is then posting them on her accounts for all to see... How can I explain without a big fallout. This has happened three times just recently, if I stop sending photos it will be war but I will look like the bad guy as my husband is commenting on the posts as if it's no problem at all. Husband says its not a big deal but I feel it is.