Saint,
Some possible reasons for his lack of engagement:
1. This particular publisher wasn't prepared academically to engage you but isn't typical of publishers
2. This particular publisher was prepared but not emotionally ready to engage on this specific day
3.This particular publisher was prepared academically but dis-engaged on a permanent basis (loss of commitment) from trying to engage others who present an objection
4. This particular publisher is representative of the typical publisher in their lack of ability/preparation to engage academically in theistic discussions or when objections are presented
5. This particular publisher is representative of the typical publisher in their lack of commitment to engage anyone at any time once an objection is made
6. This particular publisher is representative of the typical publisher in both their lack of ability/preparation and commitment to engage once an objection is made.
Class?