AZIZ POONAWALLA RAINS on the wrap-them-in-pigskin parade:
The reason that these murderers are not going to heaven is because they killed innocent men, women and children. They were engaged in harabah, not jihad.
Wrapping them in pigskin to “prevent” them from entering Heaven implicitly gives credence to the idea that these murderers were engaging in jihad, and had performed an act worthy of admittance to Paradise.
This is probably right, though it assumes a degree of rationality not in evidence.
UPDATE: Vegard Valberg is cool to the idea, too.