For me an apology would be a complete recommittal to the marriage. It would show in everything that the WAW does, they would take it seriously and give respect and time.
It would be the same as if a good friend of yours got influenced and turned on you putting you in danger, in the end the friend knew they were wrong. If the friend wants to recommit to the friendship, it would show in transparency, his attitude and respect toward you. None of us want anyone to grovel.
