I have 06 UC with 10000 miles, bike has not been ridden over 3 weeks bad leg. On way to work front end started wobbling. First thought I had a tire going flat. Checked bike all over and found nothing tires good to go. Fought bike all the way back home. The only thing I know is I can take the handlebars and move them back and forth then let go and the h-bars keep moving, like a dampening affect.

 

Most of the time it is the tire/wheel but not always. Start there. I have seen tires screw up without any warning. since you have the stock Al. wheels in place of spokes you can rule out spokes loosing.