It turns out that Ms. Ivins, his wife, was an anti-abortion activist and a former president of Frederick County Right to Life, a pro-life organization. So Ivins wrote the following into his will:
“If my remains are not cremated and my ashes are not scattered or spread on the ground, I give to Planned Parenthood of Maryland $50,000"or about 1/3 of his estate.
His concern seems to have stemmed from the fact that cremation is discouraged by Catholic doctrine, and in the case of cremation, ashes must be buried in sacred ground rather than scattered. But the threat-from-beyond-the-grave has worked, and it seems that Ivin will get his wish. So consider this a victory of game theory over theology.