All you do is to contact your broker and put an order in saying that you wish to place your shares for sale at, for arguments sake, double today’s price. As they are 'on order' they cannot be lent out by your broker and in turn you are reducing the amount of 'free shares' out there that can be used for shorting purposes.

This should help RXMD fight the shorts if the longs do this simple thing.

Full Disclosure: I have taken a position in this stock