thatguy, without you, PDM would be in much better situation. So, your actions are definitely not apathic but selfish. You decided yourself of how things should be for PDM when you decided on what you were about to do. By seeing the open-mindness of TAN, it is clear that PDM leadership didn't accept to endorse your actions by taking you out of the loop.
For your personal knowledge (describes you),
Selfish: adjective /ˈsel.fɪʃ/
Someone who is selfish only thinks of their own advantage.
http://dictionary.cambridge.org/dictionary/british/selfish