I'm the notepasser.
I sent him that Chimp meme message where he claimed survivor and begged the scum team not to go after him or he'd OMGUS him. since he's not aware of it I expected him to come in exposing Chris straight away as the survivor but if he's scum his teammates would let him know it's a joke. luckily he was right here from the start of the phase and I assume his teammates weren't around because he straight away dropped the Chris suspicionand didn't want to push him anymore. now Sky comes in and weirdly says she wants to see where this is going and he's happy to reveal the note perhaps because he was told it's not real.
also note how when asked why he flipped his read on Chris it wasn't due to tracking him nowhere which would be a good reason but he referred to the note to Chris (bear in mind the note says that he knows the reciepeint is scum). almost like the tracking result was made up later.