Could I rake it out mid winter and burn it back? It isn’t that huge an area to torch. And the stilt grass tends to come out by the roots easily in the soil in the woods (I’ve got a cleared path down to the creek, along it and back up the other end of the property. Takes me about an hour with a rake and grass scythe twice a growing season. And the scythe even sharpened rips out half the grass)
Burning, sterilizes the soil.
Not only would you have to wait for what you planted to grow, also the microbes would need to come back to normal levels.