He opened up by apologizing to the team, fans and everyone who was negatively affected by his departure. Also said that he's totally committed and is here to work. He's starting out at the bottom and will have to work his way back into a starting position. He also said that the money he owes did play a role in his return and how that affected him and his family.
I think the main reason he came back was due to the coaching change. He touched on it briefly, but you could tell that he was trying to be somewhat respectful to Wanny. He said it would have been more difficult coming back had the same coaching staff been here.