Today, while commuting to work, I was on a paved riverbed trail that I take all the time. I sat up and rode with no hands for a bit, which I also do all the time. Something different happened this time though. The handle bars and front wheel started wobbling back and forth and the more I rode it got progressively worse. I only rode like that for about 5 seconds as it happened almost immediately.

I attribute it to my rear rack being extra loaded down today as I had some extra stuff back there that I don't normally carry around.

I usually just throw my clothes in a bag on the rack and I am good to go. Today it was clothes, lunch, drinks(3 12 oz sodas and 2 16 oz bottles of Vitamin water), water proof deck boots and a medley of fruit. I had a good few extra pounds in the back.

The bag was centered on the top of the rack so a weight imbalance side to side was not an issue.

Sound like I just moved too much weight to the back and gave the front wheel an opportunity to get "light" or am I crazy to keep riding??