Except as otherwise agreed to by the parties in writing, if the party awarded the deferred sale of home order remarries, or if there is otherwise a change in circumstances affecting the determinations made pursuant to Section 3801 or 3802 or affecting the economic status of the parties or the children on which the award is based, a rebuttable presumption, affecting the burden of proof, is created that further deferral of the sale is no longer an equitable method of minimizing the adverse impact of the dissolution of marriage or legal separation of the parties on the children.