(1) A deed or mortgage of homestead realty owned by an unmarried person may be executed by virtue of a power of attorney executed in the same manner as a deed.
(2) A deed or mortgage of homestead realty owned by a married person, or owned as an estate by the entirety, may be executed by virtue of a power of attorney executed solely by one spouse to the other, or solely by one spouse or both spouses to a third party, provided the power of attorney is executed in the same manner as a deed. Nothing in this section shall be construed as dispensing with the requirement that husband and wife join in the conveyance or mortgage of homestead realty, but the joinder may be accomplished through the exercise of a power of attorney.
