Sorry to bring up an old post. This post was recently brought to my attention and I thought I'd provide an update.
A screw embedded in the front tire causing a flat and a loss of control. I was doing near 60mph when I rolled off the throttle near a police check point in Russia. As the front suspension compressed under the weight of the full fuel tank, the front started weaving uncontrollably. At that moment I had no idea what was causing the near tank slapper effect. Luckily for me I side swiped a parked van rather than hit the many cement poles, cement barriers at the police check point or on coming traffic. I suspect the combination of a full fuel tank, raising links, suspension compression and a flat & folded tire, all led to enough rake/trail change to cause the front weave. This was my only crash of any kind during the whole trip, and it took a lot of courage to get back on the bike knowing it could happen again.
Anyway, duct tape, metal bending of the headlight mount and a cash payment to the van owner and I was back on the road. My body was sore for a few days as I rested at a hotel, but thanks to lots of protective gear I was able to continue and finish my round the world trip.