Yup, I sit "MX style", it helps.

 

Now that I've had a a few months and have done some freeway time, it's actually not *THAT* bad. With the addition of ProTaper bars (positioned more forward than stock to make me sit farther forward), ProTaper grips (much softer and vibe absorbing than stock), it will hum along nicely at 70. I will be putting a 15T front sprocket on it soon (it's here, just need to get off my *** to install it)

One thing I have learned - if I come up off the seat to take a bump at freeway speed, dropping back onto the seat is not a good idea - ease back down, or the front end will unload and get wonky for a sec.

My only complaint is that, at 70Mph indicated, there is almost zero reserve power for passing or avoidance (which can largely be solved by riding with brain rather than throttle). A bit more power would be nice, which is what other bikes are for.

 

I was searching for the same problem, if you wiggle the bars by a MM the bike gets a bit wobbly at 65+ which is a bit unnerving when hitting bumps, i think a steering stabilizer would help a ton, also i have considered lowering the front forks to possibly get more weight on the front tire...might help with the "lift" when WFO for 30 miles :O

 

you do not want to lower the front, you will make it worse. To get more stability in the front you need to increase the rake, think "Chopper". that will slow the front. If you can't raise the front lower the back which also increases rake.
check the specs and see if the rake angle changed in 2010 from other years. My 2009 is fine but i set the sag loose because of my short little legs.
If you a heavy person stiffer spings will bring the front up as well.

 

If the front of the bike is higher than the rear you are going to get front end wobble. At least this was the case for me. I put a rear lowering link on and raised the fork tubes up as high as I could but still had a problem over 65. I ended up putting on bar risers and was able to raise the forks as much as I lowered the rear. This put the bike back to an equal height front and rear which helped the wobble a whole lot. I was then able to get a 93 indicated and the bike was very stable. Mind you this was down hill with a very strong tail wind.