Have you ever noticed in TST during the Balloon John scene, when Sherlock and John are standing next to each other by the door, John suddenly vanishes when Hopkins bursts in?? He doesn't return to his place next to Sherlock until Greg comes in and holds up the broken bust in baggie.
Okay, Nonny, so this is the entire sequence, just broken up to fit the gif limit on Tumblr, but yeah, wow, okay I never noticed this until you mentioned it. Like… where did John go?? He was literally almost on top of Sherlock, and then he just disappears until his input is required.
Also notice how BRIGHT that skull painting is glowing too. Hmmmmmm. More proof that this is from Sherlock’s POV for the Alibi Theory?