The first way is the way they seemed to be going literally ALL the way until episode 8, which is to show that Sol recognizes what he did was wrong (prepared to come clean to the council) and has been wracked with guilt ever since. This is evident in the way he copes with it or tries to make up for it which is apparent in the beginning episodes when he teaches the younglings and Jecki: "Do not trust your eyes. Your eyes can deceive you." "Our memories are lessons. If you don't meditate on the past…we're doomed to repeat it." (this can be a whole other part by itself tbh)

The other way they could've gone with Sol's character is by putting him in complete denial of what happened on Brendock. Meaning he has not had to deal with any guilt from the aftermath bc he feels that he hasn't done anything wrong. Which could be a really interesting choice if that's what they led with from the beginning. However, from episode 7, we see that Sol is the type to learn from his mistakes (immediately regrets how quick he was to take out his lightsaber on Mother Aniseya) and accepts the consequences of those actions (refuses to fight Koril and takes a beating from her in the process).