I agree with DM above.... more apparent on the stock non rebuildable shocks.
The front track spring helps out with "lightening" the steering effort and affects transfer. The sway issue is seperate from this.
Carls recommendation is to actually run the 900 Fusion front sway bar, which is larger in diameter. On the 900's this seems to keep the front end steadier on the sidehills than the stock bar because it allows the skis to Punch thru the snow on a side hill instead of stay on top... which is great in the ID powder, but on stiffer spring or West coast snow, I think it's not the way to go.... Again IMO based on having the larger bar in my sled.
From Carl's webside:
Larger Swaybar Kit. By changing to our recommended swaybar the result is less diving on the hill when trying to sidehill.
The diving is mimized because the front end is stiffend up drastically, but this comes at the cost of not being able to pull the sled over as easily... simple physics of a larger diameter swaybar.
If you want decent on trail performance with the benefits of vastly improved off trail boondocking abilites from removing the swaybar.... add triple rate springs to your snow checked shocks (aluminum rebuildables)... The standard-issue steel body non-rebuildable shocks will not take the triple rates.
Triple rate springs, which are too expensive for the bean-counters at the factory will allow you to run a stiffer initial rate spring but not be too harsh at the bottom of the stroke... which is where the secondary "tender" springs come into play. This keeps the side to side "sway" motion under check, while still having the full function/travel of the shock.
In my experience with Floats on my sled, If you are running Floats, I dont recommend removing the sway bar as you will will need to run too high of initial pressure to get it to handle on the trail, this will limit the full travel of the shock and make it harsh in the upper 2/3'rds of the travel. UNLESS you run the add on Holz/Fox "evol" secondary IFP secondary air chambers (not to be confused with the auxilary air chambers which only increase air volume). This give the Floats a "multi stage" air spring that allows you to run stiffer inital pressure w/o the harshness or travel-limits.
In my own experience, I do not recommend the WE airs for the front without the swaybar, especially on the 900... even with a Fabraft add on adjustable chamber.
Pulling the swaybar can give you great mountain handling AND decent on trail performance, but... IMO... you will need to invest a bit of money into springs and valving.
Do you have the Holz front spindles?
Thats my $0.02