Cute. 

Your clever chestnut still doesn't solve this: if it is the Holy Spirit speaking in Amoris Laetitia, He is contradicting what He said in Familiaris Consortio, Veritatis Splendor (encyclical, higher level teaching than an exhortation, and still binding), the Gospels, the writings of Saint Paul, and 2,000 years of the teaching of the Church. Unless you want to argue the Holy Spirit has been silent from the time of Jesus until Francis.