Do a search. One member sprayed something on the plastic that made it crack for easy removal.
Remove plastic shroud from WBT binding posts?
If you own any recent amps or speakers of European origin, you probably have binding posts encased in plastic, with "guides" that permit spade or bare wire insertion from one position only. These are a royal PITB. Some models may be removable, but the WBTs on my Dynaudios do not appear to be. I want to get them off so I can properly install Walker HDLs, but I'd like to have them off anyway to make speaker cable connections easier. Any ideas?