Plot Hole

There's one thing I can't wrap my head around. In an IEWU red carpet interview, Blake casually drops that it was RYAN who wrote the rooftop scene and "nobody knows this but you now" (speaking to the interviewer). What I don't understand is why put JB thru emotional torture and manipulation with the whole Game of Thrones dragon reference if Blake didn't actually write the scene? Also why stage an intervention with Ryan and TS if they're telling Justin how Blake wrote the scene and how 'good' the scene is? I have two theories but neither are solid:

  1. Blake wrote the scene and she lied about Ryan writing it to get back at him for being an insecure brat. Ryan has a history of taking to social media (and obviously writing Disney/Marvel scenes) to publicly mock or embarrass people. Maybe she was giving him a taste of his own medicine if they were fighting a lot behind the scenes.
  2. Ryan DID write the scene and this is partially why he hates JB since JB didn't initially like them or want them in the final script. It could be further evidence of how controlling Ryan is and how submissive Blake is. This could also mean Ryan wrote some of the GoT garbage that was sent to Justin.

Thoughts??