Who's Jumping Ship? What Schism?

'Pirates' disguised as Catholics have secretly boarded and commandeered the visible ship (institutional organization of the Catholic Church). Pirates have taken possession of the vessel, raised the skull and crossbones and are now behind the tiller steering the ship.
The Catholic captain & helmsman lost their positions and were replaced with pirates. Catholics still on board the visible ship & the 'invisible ship' (Mystical Body of Christ) are being held captive. Catholics do not recognize the pirates currently in charge of the visible ship as being members of the Faithful. Catholics haven't jumped overboard or abandoned ship. Catholics have always remained on board the 'invisible ship' although they're no longer in control of the visible ship.

Painting: Ship at Sail, Montague Dawson (1890-1973), British, oil on canvas on board