In think the simple answer is you can't. With a spinning propellor you can't have a wired connection it would need to be wireless. Add the weight of a controller anywhere other than dead centre and you''l both unbalance the thing and subject the controller to considerable outward g forces as the tips will probably spin at several hundreds of miles an hour. The lawsuits from someone who gets hit by the controller could be quite interesting though.
If you want a propellor effect, but some of these and rewire the switches for remote operation:
http://www.theglowcompany.co.uk/acat...-WINDMILL.html
Alternatively approach the manufacturer and aske them to make you a big one - much more expensive but much safer as then its them thats responsible for any injuries during normal usuage provided you've taken all the necessary precautions at your end.