I myself was skeptical of this, But I just tried it and it does actually work.
Before freezing the drive would only copy < 300MB before going into read loop or turning off all together. :x
After copied >50GB off in one go :wow:
PS don't leave the drive in the freezer for more than a couple of hours and keep it in a plastic bag at all times ( both in the freezer and while cold out of the freezer ). 8)