I just re-watched it and it *was* hearts - I was misremembering. I thought the guy who says "pow" was playing the jack of spades, which got trumped by the queen of spades.
It's actually just a poorly-shot scene. A diamond is led, Worm plays the 10 of hearts and imitates a buzzer sound, then the guy says "pow" and plays a high diamond (not a high spade), then worm plays the queen of spades on him. But what they failed to show was anyone taking the previous trick - between worm playing the 10 of hearts and playing the queen someone should have taken the trick and cleared the cards from the middle.
But whatever