There are flaws in your thought process 1) one of the people you suggest were checking the dressing rooms might have done the dump 2) it probably was the back-room staff who found the dump. Is anyone suggesting the actual CP players found it?
I agree with this. The issues appear to have been rumbling under the radar for a while. One can only wonder as to where we would now be if Gus had been fully focused all season and not playing silly games behind the scene, or allowing himself to be distracted by issues which to be fair are...
On balance I think the email is genuine. The club employs a lot of people, and there are a lot of friends of club employees suggesting it is real. I don't typically subscribe to this type of gossip but the volume of people means it cannot be ignored in this instance.