I add the tipsy tooltip to divs with the .placeTaken class. The user can then drag boxes around, so I remove the class and add it to a new div instead. When this happens, I
Using $(".tipsy").remove(); seems to do the trick since a div with a tipsy class is appended to the body of the doc when the tooltip is shown.
$(".tipsy").remove();
tipsy
Just be sure you don't use a tipsy class elsewhere (i.e. call your tooltip's something like toolTip instead)
toolTip