The sound of a plate shattering is heard when the clay pigeon is broken - the sound of the pigeon breaking would not be heard over the report of the shotgun, nor would it sound like a plate shattering.
After Neal passes out in the vault, he is laying on his side against the wall. A few minutes later, when Peter is trying to get him to breath, he is flat on his back, and about a foot away from the wall.
The goof item below may give away important plot points.
When Peter hits the kill switch the impact makes a sound. However, since the room is a vacuum there should be none. Additionally, the hair and clothes of the men outside the room show no disturbance indicating air rushing past them to refill the vacuum.