I don't know about the moment we stutter. When I stutter my brain is kind of frozen and I can't think. However, what I can do is change how I respond to the block after the distressing stuttering event. I've always beaten myself up for my stutters, felt shame about them and ruminated for hours about what a disaster the speaking experience was. Now I'm learning to let go of that. After bad stuttering episodes I practice self-compassion and positive self-talk and let myself feel whatever emotions come up, to let them work through me and process them. I think that way I can break the vicious cycle of retraumatizing myself and with time the automatic / subconscious emotional response that occurs during speech may shift too. I'm also doing EMDR with a therapist, which addresses the existing trauma, but I feel it's equally important to stop the ongoing retraumatization.