RE: Five tips to help you deal with people who love to hate consultants
Overall, this appears to be 5 tips on how to really mess up on a project. Emailing and CC'ing everyone as the first attempt to communicate is a poor style that will be resented by all parties concerned. Better to verbally address the issues in the proper forum. Just as the management team has to verbally address the issue, then document, then possibly suspend the person, you too should follow a progressive style.
I think you confuse initiative with being abrasive and obtrusive. My clients are swamped with the day-to-day tasks and I am there to assist with the extra effort required to run a project successfully.