You're a brave man posting so much personal information about yourself. Lesser mortals than you have revealed less and subsequently experienced more vitriol than you on the forums of this board in recent years. But that could change if some posters choose to become even more critical of their fellow posters. It seems to me that's what's been happening lately on this board!
Many foreign teachers here in China definitely have a 'dog eat dog' mentality and are very sly as well as being vitriolic towards other FT's in my view. Here's an example:
My present contract says that FT's are forbidden from being romantic with their students or with their fellow Chinese teachers! But when I mentioned that the bit about fellow Chinese teachers was bilge, a fellow FT started quarrelling about it with me! Actually, I had already signed my contract here despite said bilge because I'm not a single man! But if I were, I would have brought said bilge up with my prospective employer before signing.
I've already had the misfortune to meet far too many self-serving, quarrelsome creeps who are FT's here in China. So, I decided rather a long time ago to turn a blind eye whenever they were duped or used and abused by the Chinese. They're getting exactly the treatment they deserve, in my view.