Maybe your problem is just being overly consistent? Wouldn't just making half the answers officially available, but not troubling yourself overly over whether y

Maybe your problem is just being overly consistent? Wouldn't just making half the answers officially available, but not troubling yourself overly over whether you can validate that someone really is an instructor allow you to you to have your cake and eat it too? As you point out, the profs who think they can't teach out of a book with officially available answers are probably deluded anyway, and the answers not being "officially" available might be enough to satisfy them (and thus for you to reap the academic reward for your effort you deserve). A text book with available answers is a so much greater public good, it's disheartening to see you penalized for it.