Believe me when I say I'm not defending Steeda. I'm running Kenny Brown's panhard bar, upper and lower adjustable control arms with Tokico Illuminia adjustable shocks/struts (set @ 3) and KB front springs. The car is lowered
1" in the rear and 1.5" in the front with Steeda camber/caster plates. I'm also running Energy Suspension polyurethane bushings thru out the car with the exception of the upper control arms at the rear end point of connections, here I'm running stock GT/Cobra rubber bushings. This along with stock rear springs and stock front/rear sway bars as per KB's instructions on setting up their suspension system. The only deviation from KB instructions are I'm running Steeda offset bushings on my front A arms to add about 3/4 " to the wheel base. This I also discussed with KB and they said it should be a great add on. I will eventually add their front k member with coil overs but for now it isn't possible.
Now I autocross the car at least once a month and never saw an expressway exit or entrance ramp I didn't try at full speed. The car handles like it is on a rail. As for off the line, other than tire spin (expected with street tires) the car tracks straight with no pull to either side. When braking the car doesn't nose dive nor does is squat when coming off a standing start hard.
With that said I can't imagine what kind of forces it would take to brake sway bars as consistantly as you have. You might want to check you torque boxes to see that they haven't broken loose or have some flex in them. I also would be suspect of the spherical ends. KB advised me against them for street use with their control arms as well as the pan hard bar ends (mine are all bushings). They told me they need to be kept clean at all times or binding will happen.