Ricky probably means that he won't miss it in a sense that he won't feel an emotional compulsion to play while he's gone. To him, that's a good thing, because supposedly he likes to stay in control of his emotions and keep centered. That statement more than likely means that he won't obsess over not being on the field and will be patient enough to wait until he can play again. He'll still be in the natural balance of his astro body and whatnot
If you're going to worry about a Ricky comment, worry more about him saying "Last year when I left, they didn't have a running back." That's not a very supportive thing to say about the teammates still on the team at your position. Morris, Gordon, and Minor should probably have taken offense to that comment.