To transport a loewe spheros 42 plasma unit with rotating stand does the tv unit detach from the stand? I understand that the plasma tv should be transported in an upright position only is this true?

Yes, it should be transported in upright position.
When we moved, our moving company arranged a crating company to crate our Spheros unit. They built a crate around the TV and secured it in an upright position along with the rotating stand. They then put a tilt sensor (you get the serial number of the tilt sensor) to make sure that the moving people don't tilt the crate. They also un-crate it at your destination. The only problem is that the TV is already quite heavy to begin with (~180 lbs), and with the crate, it becomes almost impossible for the movers move it in perfect upright position....though our movers really tried hard.