I don't think you see the contradiction on the role emotions play in stuttering. Its clear they play a role, but it's not clear or true that they are involved to the extent that you claim. Additionally, you stated that people who stutter use more force WHEN a block occurs. You said earlier that more force triggers stuttering. How can that be true when the stutter(a block) precedes the exertion? It's almost like there are other things at play that you may not be aware of or are choosing to ignore.