One problem I see. An apology that is given because of blackmail, isn't an apology at all.
I say, just leave it alone. We all know skeptics that think in non skeptic ways about certain things. Saying "we will not buy your books, or listen to you talk, or stop bad mouthing you until you give an apology.." is so common now in the media. Like, someone says something bad about "gays" oncamera...he gets a "pass" because he does an apology which is so insincere it's silly. Or calls Obama a "dick", or whatever...
An apology should only come after time and reflection and may never come. But it must be freely given.