RE: OFFICAL PEDE THREAD
Extremely small pair of needle nose pliers work best, just grab the back part of the clip and yank, just make sure not to loosen your grip or the e-clip will go bye-bye.
If you don't have any needle nose pliers get two small flathead screwdrivers, and push on the two open sides of the e-clip (HOWEVER: This will cause the clip to fly off the other side, so unless you have something there like a wall or blanket to stop the e-clip from scoring a touchdown on the other side of the room, do not use this method; even if it lands on a blanket, they are super small and extremely hard to find if you don't know where it landed so I do not suggest this method).
Good luck.