No, you actually WANT that 10 page response. It is playing into your hands. Remember his case and others like it are very weak, so the 10 pages will be full of weak arguments.
How to counter such posts
1. Find something that can be shown to be wrong.
2, Show that it is wrong.
3. For bonus points repeat steps 1 and 2.
4. Then put in a point about saying that you assume the rest of the post is of the same quality and not worth looking at. If they give you any more material ask if it is any better then the first post. Point out that you demolished the first one.
Lesson. Unless you are an expert and are giving a lecture keep your posts short and to the point. Otherwise someone else who knows the above tactic will use it. The weak points exposed could be the only weak points in the entire response. Hardly anyone reads a long post.
For en example of the above look at my previous post. Did I reassure you that his long posts were rubbish? I was using the above tactic or something very close to it.
You may also find that this is one of my longer posts in this forum.