I appreciate the comprehensive reply, thanks.
I was hoping before mine arrived, that it would have had a little bit of lift at one of the corners, so I wouldn't have been so nervous about taking it off to have a look, but it's in very good condition, and like yourself, can't pick up the courage to do it.
I did it to the first card I ever got, a Rygar, and it has never stuck back properly, and the sticker has what I would describe as tide-marks, where the graphic ink has come away in lines as the sticker was peeled back.
There is no way in hell I'm going to attempt that again, definitely not on something as potenitally rare as this. Thing is, your one might be even rarer than mine, even if it does have hacked information.