Wouldn't work. Alice and Bob have no way of knowing whether the detected correlation is from Victor observing an earthquake, or Victor being instructed to entangle. Alice, Bob, nor Victor have any way of telling how many times this "message" has repeated backwards in time. Your process creates an infinite loop backwards in time "starting" from an earthquake. The lab staff noticing that Alice and Bob have correlated polarization only tells them that a disaster will occur, not "shortly" because the process has no timeout.

Probably safest not to bite any midges OR hobbits.

You realize if you stole-- PHYSICALLY THIEVED-- and in doing so denied someone else their ownership by removing the album from their car... it would be petit misdemeanor theft ($100), which has a maximum sentence of about $1000 and/or 90 days in jail. Doing a quick scan of the web, most petit thefts gets $300-$500 fine and a year of probation. But no, you're right, copying a CD which doesn't deny the original purchaser's ownership should be in the millions.