When you excavate a Super Vortex both the tile and the pawn move to another location. If that is the third action the pawn does not need to leave the Super Vortex tile. In future turns when a player moves their pawn onto the Super Vortex tile they move both the tile and the pawn to another location... but, only if the Super Vortex is not land locked. Meaning it can still be slid out of it's location. Basically 4 or less tiles adjacent to it. Once it is land locked it acts as if it were a basic Vortex tile.