Now, I haven't done this often, but if I ride my greenie in the morning and he's a little full of himself, and things don't quite click, I'll not work him for too long or too hard, untack him and let him be for a while, and later that day saddle up again. Almost invariably things are better the second ride.
Sometimes they have off days (or off moods within days) just like people (I hate to anthropomorphize, but in this instance I think it may be justified...). I won't let him get away with being disrespectful, or not doing as I asked, but once I get it, if I can tell he's in a mood, I'll get the response, and not torture him further about it, and try again later. Sometimes, especially with youngsters and greenies, a couple of short sessions a day can bring concepts over better than one hour long workout.
A stubborn horse walks behind you, an impatient one in front of you, but a noble companion walks beside you ~ Unknown