If a father is unworthy and the mother is deceased, can an adult child be sealed to his grandparents or aunt and uncle?
The sealing power was restored through the great prophet Elijah who came to “turn the heart of the fathers to the children, and the heart of the children to their fathers” (Malachi 4:6). As with all things in His restored church, sealings are to be carried out in the order and manner He has instituted, so that all may be joined together as His children and receive the blessings of the temple.
Couples are sealed together, and children sealed to their parents. This creates a chain moving up and down the line, bringing the entire family together- from our oldest ancestors to our youngest children. Those who live unworthy of the blessings will be cut from the chain or “sifted as wheat”, and the remaining links are left whole.
Because all things are done in the order predicated- in a situation like the one you’ve described, this sealing will not be performed until the father is either living worthily or has passed on so that the work may be done by proxy. You will have to wait, but remember that your wait will be but a short moment and the Lord will not allow anyone to be overlooked as His great work continues.