I was never big on golf, so you can't really say I care, but whatever he says is going to be rehearsed and planned. Whether genuine or not you be the judge, but in the end he's going through the motions and in a year or so his behaviour will be just another late night joke, much like people look back on the Clinton/Lewinsky deal and laugh it off. Every celebrity, when something goes wrong (and only after something goes wrong) come forward, hold a press thing, and say "I'm so sorry." He'll back on the golf course in a year, back to his lifestyle and huge income.
If he's genuine, the best thing he can do is leave golf, for as long as it takes, and spend the time with his wife and kid if they'll have him.