There is no need to discnnect the inverter cables if display is positioned against a wall or something of the sort. Make sure it doesn't tumble over !!!
Quote from jonesuki:
Would you please post photo of the resulting mac mini case (both metal and plastic part) after these steps? I would like to know if there is any scratches by applying these technique. Thanks.
Use businesscards between case & putty knife if you don't want any scratches. Worked for me.