This combines methods culled from several stack overflow answers to create a Flash-free multicell cut and paste. This solution is structured as a jQuery extension.
The SO answers used include:
http://stackoverflow.com/questions/17527870/how-does-trello-access-the-users-clipboard
http://jsfiddle.net/AGEf7/
http://stackoverflow.com/questions/12066870/how-to-check-if-an-element-is-overlapping-other-elements
http://stackoverflow.com/questions/8884803/jquery-drag-and-draw