Interesting. That's the kind of thing a responsible journalist might turn up in about 15 minutes. But the forces behind making this factoid a viral "truth" on the internet are not committed to responsibiity or ethics.See what happens when you check your sources:
From the St Lucie County Supervisor of Elections, http://www.slcelections.com/
"NOTE*- TURNOUT PERCENTAGES WILL SHOW OVER 100% DUE TO A TWO PAGE BALLOT. THE TABULATION SYSTEM (GEMS) PROVIDES VOTER TURNOUT AS EQUAL TO THE TOTAL CARDS CAST IN THE ELECTION DIVIDED BY THE NUMBER OF REGISTERED VOTERS. ALSO NOTE THAT SOME VOTERS CHOSE NOT TO RETURN BY MAIL THE SECOND CARD CONTAINING THE AMENDMENTS."
So your "incriminating" 141% turnout was actually closer to 70%.
Be careful what you trust on the internet.