You can look into a headlock to keep that from happening in the future to replace the star all together.

I know I've seen them somewhere else recently, but I found these...
http://www.google.com/products?q=hea...ock&hl=en&aq=f
http://www.setteusa.com/show.php/Parts|Spacers|headlock
http://www.pricepoint.com/detail/162...0-Headlock.htm

This is kinda neat to replace spacers if you have any, holds the fork in when you adjust the stem
http://store.interlocracing.com/opslohesp.html