Help me out here. I'm a bit confused, first in him not saying anything to you four years ago when you decided to write your own rules, seems a bit toolish, if he truly felt that way.
But secondly, you lie to your employer about your situation. Did you happen to call the pilots that may have been called out on reserve or given a "junior assignment" and explain the situation and apologize? Thought not. No matter how crappy your regional was, where were
your ethics? Was that week off a "right"? I guess it was in the new age of entitlement.
Can't blame him for not updating a LOR for you, but he should have had the 'nads to tell you to your face over the last four years. That was toolish. But IMO, your behavior was just as toolish for basically lying to your employer and someone had to pick up your slack.
