Mine did this and it was the passenger side lower control arm bushing shot. I believe it was the front mount. Replaced arms to BMR and no problems since.
^^ I was lost too. I step out for a day and get schooled by Lito (I feel I owe you something for the lesson) and learn to cross reference threads! Anyway great knowledge to be learned!
I am the one who sent you the PM about the gauge cluster. I have the My Color option and not sure now about changing back to a four gauge cluster. Thank you for posting about the earlier deal not going through. If you have other interests go for it. I still like the look of the Roush.