These types of questions and the answers depend so much on the semantics we each use... and without knowing/seeing what exactly is happening, any advise must be taken with care.

I am generally in agreement with Sir Russell, if I took his meaning correctly.

I'll add that your tearful reaction and subsequent feeling of well-being sounds more like the cathartic high one gains from a good cry, which is an emotional "endorphic" reaction as opposed to the physical "endorphic" reaction which is generally associated with sub-space.

It sounds like you're being pushed "over the edge" by your emotional response to the "humiliation" of self-inflicted punishment as opposed to a physical response to the pleasent pain of the spankings. It really doesn't sound like you've disconnected per se... in fact it sounds like you've entered a heightened sense of pleasure.

But I don't think you need worry about any sort of endangerment because the main concern with being in subspace is: Is your partner aware that you've entered it, is taking care to not exceed your limits nor damage you physically while you are incapable of safe-wording.

Again, all that said, my advice is very dependent on my reading of your post. If it doesn't make sense to you... take a more conservative approach.