According to this CO, you are out of order, yes. That's the end of the story. It's possible that the CO is just real tight, or it's possible that your hint went over the top. We can't tell from here, but in the specific case, it doesn't matter, 'cuz the CO has told you what you need to know about this log. Other COs don't mind hints, particularly if they're witty and subtle.
Yes, he can.
No, of course not. But in this case, the CO's not trying to control what you write, he's trying to protect the value of his cache.
From what you're saying, he was exceedingly nice about it, so I don't know why you're hesitating to please him. In particular, it sounds like the very best information about this subject in this particular case will come from discussing it with the CO himself. That will give you good insight into possible points of view of COs, whether his views turn out to be common or not, and give you ideas about how to provide hints that this CO would find acceptable, if any.
Indeed I am not hesitating to please him. The logs have been amended for him. I just want to know how the game is played and what other COs and seekers' opinions' are. Many thanks for your input.
In this case the CO states in his email to me but not on the listings that the circuit is intended to be tricky, I guess then that he does not mind 30% DNFs on his caches, which is fine.
As I said I am new to this, so any knowledge is welcome.
Thanks