There is a events element in the data of the item. This should get your started, you can read your elements and store the handlers in an array before unbinding. Comment if you need more help. I got this idea from reading the $.fn.clone method so take a look at that as well.
$(document).ready(function() {
$('#test').click(function(e) {
alert('test');
var events = $('#test').data("events");
$('#test').unbind('click', events.click[0]);
});
});
<a id="test">test</a>
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