I don't disagree with what you're saying, however, the same auditor did the city and the local United Way. I find it incredulous to believe donations to the latter were in cash, so there has to be a paper trail of donations. As far as Waste Management, I'm curious as to who the "payee" was on the checks and further, whose name was the receiving checking account titled to. Could those payments (from Waste Management) have originally been set-up in a purely altruistic manner and titled for "DuBois Days"? Anything is possible!
Final thoughts: my opinion is, if the indicted are proven guilty, then those involved were only a few. With more than a few, keeping a "secret" becomes infinitely harder, if not impossible. Finally, what were the first allegations and who was the accusing party?