We know that Frank loves stravinsky music, in the stravinsky composition Le Sacre Du Printemps we have a part called The sacrifice, so one of the defenition in wikipedia says:Le terme est également passé dans le langage courant pour désigner le fait de détruire ou laisser détruire stratégiquement une partie d'un ensemble en vue d'un objectif global jugé plus important :To Let destroy something strategic of one part of an ensemble to save the main goal judged the most important. So Frank let himself in stanby mode and probably keep working in secret and will come back with a big story to add in the hystory that all people thought it was over.