I had the same problem that Randy is describing. Mine tore completely off one side and 3/4 through the other. Both of them ripped off of the subframe so the slip fitting no longer had anything to slip into.
You will be very suprised at how much better the car handles if you go the way Randy and I did. Its like you just installed your bar again, for the first time. The car is even more tighter then it was when you first put the larger bar on!