We consider it a wonderful exhibition of the power of God over life and death

Lutero:

WHY did those graves open up DeMaria?

Because they are the Saints of God. Just as St. Denis is a St. of God.

Psalm 116:15

King James Version (KJV)
¹⁵ Precious in the sight of the Lord is the death of his saints.

And were those who came out of the graves missing their heads?

That detail wasn't mentioned. 

God is not a "god" of the macabre!

You consider it macabre for a saint to walk with his head in his hands. We consider it a wonderful exhibition of the power of God over life and death. I don't consider it macabre that the Saints of God came walking out of their graves for the same reason. 

John 11:26

King James Version (KJV)
²⁶ And whosoever liveth and believeth in me shall never die. Believest thou this?

Sincerely,

De Maria