Come the end of December, if you need to take your $500 tax loss, if WSTI has no mm participation at that time, your broker will take the shares off of your hands so that you can account for the loss. Give them a call today or next week to review your options but thats typically how these situations work.
Now if you don't mind risking the $500, you could simply hold on to your shares and in the event Dan Bates gets Windstream Technologies re-registered at some point in the future, you would still be considered a shareholder.
Hope that helps.