Apology is one of the trickiest thing to read.
Sometimes we just have to take it at the face value - apology means sorry, and it really means: sorry, I know I was wrong, I truly regret it, I wouldn't have done that if I could turn back time.
Sometimes an apology is said just to save face instead of a sincere regret. Sometimes, it means: sorry, I didn't expect I would get caught. I didn't realize that this makes people mad at me, and now unless I say sorry they would think poorly of me.
The way you take an apology says it all: Do you trust the person enough to take his apology at the face value, no matter how badly he had wronged you?