Flying wings that are controlled entirely manually exist. A favourite example (I know people that have flown these) is the Marske Pioneer[1]. An actual glider w

Flying wings that are controlled entirely manually exist. A favourite example (I know people that have flown these) is the Marske Pioneer[1]. An actual glider with highish aspect ratio wings that was and is quite flyable by hand [1] https://en.wikipedia.org/wiki/Marske_Pioneer https://en.wikipedia.org/wiki/Marske_Pioneer The design in question is more of a flying dart than a flying wing anyway. There is no reason to think it would be particularly unstable in pitch.