Post 1.  I have read several articles now about the latest actions and am somewhat confused.  

A Jan 27 article in Crux says the Vatican delegate appointed by Francis will “take over”, or govern the order. 

A Jan 28 article at Crux made the points that 1) Festings resignation was accepted by the KoM Sovereign Council; 2) Albercht Boeselager, who's firing led to all the brouhaha, has been reinstated to his former position; and 3) Von Rumerstein, until now Grand Commander, will be Lieutenant ad interim and remain the head of the Order until the election of Festing’s successor takes place; and 4)  a special delegate appointed by Francis will oversee a “process of renewal” and that  "the lieutenant ad interim (Von Rumerstein) assumes responsibility over the order’s government." 

So, it doesn’t seem that Francis is taking over the order, in the same way the papacy took over the Legionaires of Christ after their scandals.  Maybe.

See Post 2