Great answer to OP's question. I have a question for you, though I understand if you won't or can't answer it: Is what you wrote above advice given to you by Theymos, or is your reluctance to delete posts or to be a strict moderator in the Spanish section a personal choice? Theymos rarely gives his thoughts on forum moderation to the community, so I'm just wondering.
I don't think there's any issues answering it. I do tend to try, and keep things that were discussed privately, well private. However, most of what has been said is generic, and vague rather than highlighting certain users etc.
To answer your question, I've adapted myself to the role rather than having input from theymos on that particular issue, although I have been given advice by theymos in the past, however that was in general moderating rather than local section specific. I think I've touched upon it before, theymos tends to give you a nudge in the right direction, when required.