So you are saying that the car didn't pull one way or another due to the frozen caliper? If a caliper is frozen and is binding the brakes excessively, I would think that there would have been other symptoms affecting the steering. Tire wobble would not be one of them. Hmmmm, this is a new one for me.
2003 530i 5-speed, SP, PP, CWP, Xenon
UUC short shifter with DSSR and ZHP shift knob
Michelin Pilot Sport A/S
BSW IQ speakers, Sirius
Huper Optik tint
2007 X3 3.0si
6-speed manual, CWP, Xenon, Cft. Seats, Premium Pkg, Sirius, Privacy glass