There's no mention of deflections now in the laws. The relevant bit simply says
- touches the ball with their hand/arm when it has made their body unnaturally bigger. A player is considered to have made their body unnaturally bigger when the position of their hand/arm is not a consequence of, or justifiable by, the player’s body movement for that specific situation. By having their hand/arm in such a position, the player takes a risk of their hand/arm being hit by the ball and being penalised
So the ref only really needed to see whether he thought the hand position was natural or whether it had made the body bigger. We can argue all day about whether it was natural or not, but I don't think the VAR analysis needed to be any longer - unlike the muppet last Saturday who took 15 views to make an easier decision.