At the time the minister told her he couldn't put the child's name on the congregation's list because he was unsaved. "
You must have misread, since you misunderstood it. A pastor that doesn't pray for someone is ignorant. If they don't pray for a kid and their family, they are wackjobs. To say the kid is unsaved also is worse.
"He must have not had any sin because he was afflicted."
Makes no sense whatsoever.
Neither did yours. All have sinned and fall short of the glory of God. ALL HAVE SINNED. What you were saying was 'not all'. Original sin is about being born with a sin nature. If we are not born with original sin then we don't need a Saviour. Right? How does original sin deny free will?