Was it a simple puddle or was it a violent drop into a pot-hole?
I am thinking simple things like:
Loss of a balance weight
Damage to rim
Broken cords in the tyre
All of those could be ruled out by temporarily replacing a wheel with the spare.
Rod #28 has already been mentioned and I recently found that mine was loose at the bottom of the kingpin, though it mainly produced clunking noises when braking.
I have twice suffered broken diagonal tie rods (#34) but it didnt produce any noticeable effects.
Failing all this, I would go for the damper blades as they are most vulnerable at the bottom.
