I started the rumors, of course.
It was a very simple task, and all I had to do was engage in some mischief. After overhearing everything that went on in Charles' office, I decided that it was the most effective way to resolve the problem.
'Charles isn't willing to do whatever it takes, so I just have to motivate him a little.'
I was a 'kind' person, after all.
While the Scouts who rested in their lounge were conversing about the Horde and what they saw, I managed to manipulate a few Camp members to pass by the door. Also, by using <Steal > to reduce the intelligence Stats of all the Scouts, the already tense people lost their self-control and rambled on about the Horde to one another.
Their voices were loud enough to leak out of the resting area, causing random Camp members to hear their conversation.