(Spoilers Published)Seriously? Who really wrote the pink letter?

So after listening to several podcasts and YouTube videos on the subject, my original assertion still stands. The one who wrote the pink letter is working with or among the conspirators that stabbed Jon. It’s not Mance, it’s not Ramsey, it’s the people that want Jon gone. Yes, the wording sounds like Mance’s, but it also sounds like Alliser Thorne. I like the idea that it’s someone within the Watch who would see the brotherhood “go back to how it was” before the wildlings and Stannis showed up by killing the deciding party. This feels much more like a political assassination or even “mafia-style” coup that, despite being used in periphery, has not been employed in the books until now, but has real life precedents in mutinies such as the Discovery Mutiny or the Kiel Mutiny.

Sorry for the spelling.