Well, Newly Enlightened, I really wish someone who knows could tell us. Without giving the actual identities away, it would be helpful to know, for example, that it was from a branch member to a circuit overseer (or whatever the case may be).
As it stands, spelling and grammar issues make it look a little dodgy. When you have a completely anonymous letter divorced from place and context, those errors really stand out.
This doesn't mean anyone's doubting Atlantis. It could, however, mean that Atlantis has been passed some bad information.