(a) A partition or exchange agreement is not enforceable if the party against whom enforcement is requested proves that:
(1) the party did not sign the agreement voluntarily; or
(2) the agreement was unconscionable when it was signed and, before execution of the agreement, that party:
(A) was not provided a fair and reasonable disclosure of the property or financial obligations of the other party;
(B) did not voluntarily and expressly waive, in writing, any right to disclosure of the property or financial obligations of the other party beyond the disclosure provided; and
(C) did not have, or reasonably could not have had, adequate knowledge of the property or financial obligations of the other party.
(b) An issue of unconscionability of a partition or exchange agreement shall be decided by the court as a matter of law.
(c) The remedies and defenses in this section are the exclusive remedies or defenses, including common law remedies or defenses.