It says "Open Door Policy" in the letter's subject line, for crying out loud.
Yes. I also consider Michael Yon to be an untrustworthy source.
I also know the story behind COL Tunnell's command of 5-2 SBCT since I was on his Brigade staff in Afghanistan, and I was there for the subsequent change of command and 180-degree change that had to be made to that screwed-up unit.