You can only distribute copyrighted text if you have permission to do so. The same for theWord or myself or anyone. Just because someone else has permission to give away copyrighted material doesn't mean that you (or I) do. I would agree that theWord should ask for Dr. Constable's material for free, but if Dr. Constable says no, then you absolutely cannot distribute it after he said no. It's his material and he can, on a case by case basis, make a determination about how his material is distributed.
I think your misunderstanding of copyright law is you think if an author lets one person distribute his material, that another person also has that same right. And that's now how it works.