Pretty sure he has no grasp of what trust is or that in the case of intellectual property, it's pretty damn immature to take something not created by you and use it as your own without giving credit where it is due.
This followed with a relatively one liner apology makes this conclusion: He doesn't understand and is only sorry because he got caught; therefore it's logical he would have continued stealing work. Because he misused some people's trust makes everything he said beforehand about that work null and void. Do we believe what he says, why should we?
Yeah, give me some credit I'm not just laughing this guy out of town.