I've had similar experiences. Feel free to pm me.

Have you read "Waking the Tiger"? It explains the somatic memories in a way that makes sense to me. Basically the author, Peter Levine, says that when animals have a traumatic experience, they flight/fight/freeze. The freeze only kicks in when fight or flight is not an option, and it numbs them. If they survive the traumatic experience, then they do a whole body involuntary shake, and then they go about their business. This shaking allows the body to get rid of the experience. Humans usually don't shake after trauma, and this means that the memory is stored in an unhelpful way, in the body. So those weird feelings like you describe can happen when something triggers them.

He suggests that you imagine yourself successfully dealing with the trauma; fleeing to safety or fighting it off, when you experience the physical symptoms.

I'm not a therapist, but I would say that your experiences all sound familiar to me, and I would say that they are somatic memories. I am not sure what the "implicit" part means-I guess I haven't read that book