It should or it's flimsy writing.
The quarter wasn't fried...either explained away by "it wasn't on when the EMP fired" or not explained away at all. if it were a bigger gadget, and had interactable parts, I'd think they'd show Fitz fixing it on the spot. But since it's so tiny, I doubt that shot would work, so I don't think that's the direction they're going.
Oh, and Garret shot the dog, and has known Ward isn't 100% trustable with things he gets attached to. That explains why he didn't trust him to handle Skye without Dethlok, and why he has made more than a few remarks concerning how much Ward could handle.
Also, I believe that not only did Ward know his brother was in the house, but that Garrett was aware of this, and why he saw Ward as a potential recruit for Hydra. I don't buy that Garrett would ask that question without already knowing the answer....he was more looking for if the kid could lie, and hold to that lie, making him a perfect insert into SHIELD.