Do you know how to?

I think I just remembered how I got them out. Try spinning the binding post nuts all the way counter clockwise until they actually come off. They won't be flush anymore and will no problem to pull with your fingers. If that doesn't work, just find a way to rip them out. You really can't hurt anything.

Thread a small screw in few turns and pull. Also, you can pry them out with a needle. Doesn't matter if you ruin them as they will never go back in. They should come out very easily.