fukken Dell... how to remove vid card?

I need to remove my video card from my Dell XPS Gen 3 but it has this green plastic thing locking it in (instead of, oh, the usual way of just screwing the card in like normal).  How the shit do I unlock it so I can remove the card?

just break it off. that's why i build my own pc's

They add that plastic so that you have to call them and they add a video card that cost more for less. That's why it's better building your own from the start so you don't have to deal with that hassle.