The grenade's spoon is shown to flip away twice--once when Chas lets it go while holding the grenade, and once when he lets the grenade drop in the next shot.
When John and Zed arrive in Geraldine's hospital room, Geraldine's head changes positions. When they first arrive and Geraldine is in the foreground with Chas, John, and Zed in the background, her head is turned to her right facing the window. The camera angle then changes to be behind the Chas, John, and Zed, with Geraldine in the background, and Geraldine's head is now turned to her left (facing the group and the door).