Well, first let's define self-destructive:
destroying or causing serious harm to oneself.
And the antonym self-preserving:
preservation of oneself from destruction or harm.
Using your example of recusal, from the dictionary:
the withdrawal of a judge, prosecutor, or juror from a case on the grounds that they are unqualified to perform legal duties because of a possible conflict of interest or lack of impartiality.
If you run the definition of recusal through Stanford's Sentiment Analysis tool you get a 69/100 negative sentiment score. This makes sense because recusal serves in the negative interest of the party being recused, hence the recusal.
I would say an action without positive or negative meaning would simply be a meaningless action. As in: "His behavior was seemingly meaningless."
An example of truly meaningless behavior that comes to mind is the AI strawberry farmer tale Elon Musk and Eliezer Yudkowsky like to tell. The story roughly being:
If an AI were to develop human like intelligence with a simple objective of maximizing strawberry yield on a strawberry farm, it would need more and more sources of carbon. It doesn't specifically have a consciousness so it's not really self-preserving or self-destructive. It simply is. On it's quest to maximize strawberry yield it could discover that humans are a great source of carbon and utilize 100% of it on the planet. It would continue doing this for as long as it existed.
I would simply call that behavior "meaningless" on the part of the AI. (Not for humans though.)