Well I'll definitely vouch that a naked bike can be tossed about pretty badly by cross winds. Last year about this time, I was off the bike for 2 months because of wind gusts and cross winds.
I managed to pull or strain/sprain my supraspinatus (sp?) in my rotator cuff, my bicep muscle, tricep muscle,... and the inflamation of all of that was pulling the ball out of the socket.
how? The winds that day were 50 gusting to something like 70mph. I was riding to work, on the 919, when suddenly it felt like someone grabbed my rear peg and shook the whole bike with it. The bike wobbled hard, but I managed to recover it and continued to work. As the day wore on, I started getting stiffer and stiffer. Thinking it was because I wasn't riding a lot at that point, I shrugged it off applied a little heat for the "sore muscles", and even rode to work the next day.
By the end of the next day, I couldn't lift my arm even to shoulder height anymore, and I could only manage an arc of about 120 degrees. I was a mess.
The winds were almost as bad, but I was riding with my right hand only for most of it (yes, stupid I know) because of the agony that the feel of the bars would do to me if I touched them.
Over the next few days, it felt like it was getting better, then about 5 days in, it got -way- worse. I left work mid afternoon for an impromptu chiropractor appointment
The chiropractor gave me my diagnosis, and "suggested" that I remain off the bikes for a few months while I healed and built up the strength in it again.