If you are wobbling badly, and an obsticle is on one side, do NOT try to grab hold of the obsticle to slow yourself down. I did this today. The result is that I was spun completely around and went down hard backward. I may have bruised my tail bone, in addition to bruises on my arm, shoulder, and lower back.
Hopefully, this will not put me out of reach of my goal of riding to work for Bike to Work Week (May 26 - June 1). 
-Mandell
Don’t worry, you’re not the only one. Apart from injuring yourself it’s really pretty funny. I did it when I was out on my first ever muni ride on my 20" with a slick tyre. I was going down a fire trail and had too much speed so I tried to grab a tree to stop.
Andrew
Re: Wobbler Lesson of the Day
Mandell wrote:
> If you are wobbling badly, and an obstacle is on one side, do NOT try
> to grab hold of the obstacle to slow yourself down. I did this
> today. The result is that I was spun completely around and went down
> hard backward. I may have bruised my tail bone, in addition to
> bruises on my arm, shoulder, and lower back.
Yet another reason to deadlift. 
Deadlift regularly and if your hand
closes on something, you stay attached until you decide to let go - there’s
none of this falling down nonsense. Deadlifting also armors the back nicely
against bruising.
–
“Quemadmodum gladius neminem occidit, occidentis telum est.”
– Seneca
No serious damage, as it turns out. Just a little bruising on my right shoulder and glute.
Now that I have my new seatpost (I was riding with one a couple inches too short), I can’t wait for it to stop raining so I can get back to practice.
-Mandell