GSP, some of the answer lies in what his contract allows him to do. Mowing does nothing much beneficial. It kills hens(though a disk could too-flushing bars help), adds to thatch, and doesn't disturb the status quo. If disking is an option, in the absence of fire it would be the next best option. Honestly, a heavy grazing for a month would be good, but isn't allowed in any contract I know of outside of a disaster declaration. As for the burns and color, if you only burn 1/3, the pheasants just move over and use the remaining cover until the burn greens up. As soon as hatching occurs the broods will generally move and spend a significant amount of time in the burn where the insect population will be higher and movement will be easier. Done correctly, the burn should begin to green up within days.
I am glad you mentioned grazing because that would do the most. Really intensive, high tonnage grazing that would trample alot of that thatch would really be beneficial. Is there some resaon that the people that make these decisions are opposed to that?