Its sad they don't teach critical thinking anymore. A good cheese eater could make the case that no safe shot is possible in the hunting fields. I would not agree with him, I would go on to make the case that where the written rules end, a responsible man with common sense stands up.
That shot at the pheasant was a bad shot because you were downrange even if the bird was going up. I think its a given that the hunters would have already scanned their respective fields of fire and seen you inside the fof, precluding the shot. but they grade on the curve now, hmm. No wonder you got the responses you did.
I hope you don't grade on the curve, Mr. Instructor! Fail the bums that aren't safe!