Linda Hogan's feud with her daughter Brooke has her defending Hulk Hogan ... calling him a great father who doesn't deserve to be iced out from Brooke's life.
In a shocking twist, Hulk's ex-wife tells TMZ ... Brooke cutting off the family for "bogus, selfish, childish reasons" will have long-term consequences -- ensuring her kids never realize their grandfather is the great Hulk Hogan.
Linda says she's sad she won't be a grandmother to them .