I watched it on CMT tonight and didn't notice any cropping; I had full frame. The picture does look a lot sharper than in the past, too.
Are you sure it was full frame? I haven't watched all the episodes that CMT have shown, but everyone I have seen has been majorly cropped. I don't get CMT in hd, but I would have thought the aspect ratio would be the same on CMT and CMT HD.