What was the pill imprint and exact cause of death?
Note that "holes in the brain" is not a cause of death, if it was MDMA it would have been something like dehydration, hyponatremia, over heating.
Or as molerat said, something like PMA.

Approximately 2:100,000 users of MDMA have severely negative reactions to it, i've never had a bad experience on ecstasy nor has anyone I have introduced it to. (Over 20 uses in a two year period.)