Rear Wheel Wobble?

[yoda]

Hello guys,
I recently bought my ti and on the way home I felt the car vibrate like when you have a bad wheel balance, and it always does it when it gets to about 80 MPH. I had to SMOG the car to transfer the title, and when the guy had it on the rollers I could see the rear wheel had a bad vertical offset, as in /...\ , what would be the cause of this problem?

I took the wheel off and it looks fine, and the rest of the susp components look fine as well, at least to the naked eye. Please if anyone has any input on this I would greatly appreciate it
I will be replacing all 4 rotors and pads next week, but I need to know if I need to replace bearings or even the axle, I just don't know. The funny thing is that I could see the wobble when he was rolling the wheels at about 20 MHP, but you don't feel it until you reach 80

The wobble looked to be only on the vertical axis...

Thank you guys in advanced