Add sortable option to show original position

I think it would be useful to add an option to highlight the original location of an element in a sortable list. Something similar to http://jqueryui.com/sortable/#placeholder but in reverse; instead of highlighting the target, it would highlight the original location. This would allow the user to effectively "cancel" dragging without having to worry about remembering the exact position the element was originally in. I understand this would add an additional list item to the list, but if the highlight were also stylable, the user could reduce it to take up minimal space if that is somehow a concern.