wow - this is rough.. that failed at 90 ft lb!? I do know that when using poly your torque #'s will change quite a bit - do the shafts have the OEM style stop pin or are the nuts the ny-lock type?
Mine are a crimped type lock nut.
I feel your pain car freak I wish mine broke off as Now I have to get this dam nut off and figure out what to do next.