Does anal O cause ejaculation?

Have not experienced this with anal orgasms before. Normally I experiences lots of dry Os which go on for extended periods without any refractory periods. Sounds like you're still in the rewiring process if you're experiencing both types of orgasms. Anal orgasms do not normally produce enaculation.

Does anal O cause ejaculation?

The answer is maybe ! Yes, it can lead to triggering the ejaculatory reflex but the factors involved are many and varied, you can also experience an anally induced orgasm without ejaculating. Like Aneros induced prostate orgasms it may take self training, as you have obviously been doing, to accomplish. Some men may be naturally pre-wired for this experience while for others they may not have the desire necessary to learn the techniques required for them to experience an anally induced ejaculatory orgasm.

I know that prostate stimulation, if done correctly, will end up with an orgasm that has no refractory period but it is not what I have experienced. Instead, My orgasm did come with a refractory period and ejaculation, just like what i get from masturbation. So i start to wonder, what kind of orgasm is this coming from. Anal?

Some men have reported refractory like satiation following prostate stimulated dry orgasms but the majority of men do not experience this. It appears the two main factors inducing the refractory effect are : #1 - The hormone prolactin's release due to the triggering of the ejaculatory reflex and #2 - The draining of semen from the prostate and seminal vesicles. By avoiding those two factors most men will not experience a refractory period associated with their orgasms. Prostate milking (factor #2) will very likely result in a refractory period as well but the mood altering effect of a prolactin release is markedly lacking, resulting in a quicker libido and arousal recovery.
Good Vibes to You !

I've done this before, if you sit on your aneros and rock back and forth you'll ejaculate without ever touching your penis.