Ok, here's the scenario. I capture a ringworld from a pilot named Frodo. Naturally, Frodo gets annoyed and calls in his Fellowship to try and kick my ass. I decide that the best course of action is to batten down the hatches, and hold on to the precious planet. 48 hours go by, and Frodo, being a canny bastard, decides to share my butt one last time before I slip off the newsfile. Do I still have 12 hours of Gandalf prodding my asshole, or does that go away after the newsfile hits the 48 hour mark?

Better stay battoned down and If you don't flux the planet he can just keep comin at it for eternity as far as your ship he alerted wont slip off there news tabs for another 48 hrs .

Whether it's fluxxed or not isn't the question, the point is can a ship be shared for an extra 12 hours by a player who knows his timing.

Yes gandalf will be able to probe you for another 24 hours, frodo however, is out of the picture, unless you dissable or hack gandalf so he can share you to frodo, or dissable or hack frodo agian.