It is illegal for cops to use a person's credit card. It's most likely that the cops will get fired for using Spencer's credit card to order pizza.
When Stu Stimble reaches out to turn off Freddie's camera, the crew camera shows Freddie's camera at his side, but then it cuts to the view from Freddie's camera and the view is near the height of Stu Stimble's shoulder.
When Stimbler's son throws the plastic bottle at the Shay's front door, the bottle shatters as if it were made of glass.