On a page where I describe the 8 limbs of yoga, I define satya this way:
Truth Satya
Satya requires honest communication in thoughts, words and deeds. This practice encompasses a trust of our inner values and heart as well as integrity in our actions to our values and heart.
And here is Debbie Ford on honesty with ourselves:
Here is Debbie Ford from the Omega Institute web page.
Debbie Ford "Honesty and Integrity" from Omega Institute on Vimeo.
I agree that honesty with ourselves is often the hardest - not only because of ego, but because we just simply don't see ourselves and may not have the awareness necessary. Perhaps that blindness results from the ego, but I think of ego as operating on a more conscious level.
I may need to refine my definition of satya, so to encompass this inner quest.