It is not clear whether Conway conveyed the terms of the deal to his superiors in Baghdad and at the Pentagon, or even to leaders of the U.S. occupation authority. One person familiar with the deal said it took senior U.S. military and civilian officials in Baghdad by surprise. Because of the apparent lack of consultation, some officials said elements of the agreement, particularly the speedy troop withdrawal, may be tempered by the Pentagon or by the U.S. Central Command, which is in charge of operations in Iraq.
Sounds to me like Conway was doing all of this himself, but as your link points out, not all of the Marines liked it.
That is the way it should be. You have to let the commanders on the ground run the war....wouldn't you agree????
...and as I said much earlier, his career is on the line. If this settlement fails, he is toast. Again, the way it should be.