Well, for starters. he owes an apology to all the people who bought products and services which he advertised to them. Basically, when celebrities promote goods and services for money (in his case a great deal of money), they are asking the public to buy into their image. In Woods' case, his image, which he fully exploited, was a squeeky clean, married, family man who just happened to be the world's greatest golfer.
He has now sullied his image and by extension, the products and services he is associated with, which is why none of those ads are running anymore and will probably never be run again. He is the butt of humour now on late night TV and on the Internet. People now think of him as a guy with gargantuan sexual appetites. Nothing wrong with that, unless you're tryng to sell a family car such as the Buicks he promoted. (He should have opted for racier cars, perhaps Porsches.)
I don't follow golfing very closely but I have come to have new respect for John Daly, who is who he is, no apologies for warts and all. He is the real thing, Tiger turns out to be a complete phoney. He's still the greatest golfer but given his personal proclivities, he should have stuck with that and foregone the endorsements.