That he messed up is obvious - that it could occur to a celebrity - constantly tempted did not astonish me. While I have been faithful I cannot say, given the length of his career and no doubt the many "opportunities" that presented themselves that I would not have failed as well. Its the 'ol walk a mile thing if you know what I mean.
I can't see throwing someone under the bus for a single transgression especially when all else points towards good character, a forgiving wife, etc. ;-) Have to post now - porch is flooding ... ;-) Not kidding!
I'm aware of all the good things he has done over the recent years and have enjoyed listening to his interviews. His advocacy for our troops, hunting, and living off the land are all things I find very commendable and honorable. But none of that means much to me now, or at least my opinion of him. Like Kobe Bryant, the mention of his name will immediately remind people that he dishonored himself, and cheated on his wife.
He can apologize, try to be a better man, and live up to the responsibilities of his actions - and he needs to do all of these. But doing so won't wash away what he did in a moment of human weakness. Only one thing can do that, and the good news is that he, like all of us, can be forgiven.
Good luck with the flooding!