Has anyone else experienced this?

I think it's possible there's a level of false-confidence we can fall into, where we think we know how to get the pleasure, because we remember the mechanics of what worked before. Where in reality, there were a lot of other hidden, non-mechanical, factors in play that contributed greatly. And if we don't even have a sense for what those are, it's harder to tell when they're missing.

It could be having the proper level of patience, relaxation, openness to unfamiliar sensations, listening to your body in the right way, or any number of other things nobody has ever even thought about... things we're doing (or not doing) without realizing it.

I've been trapped in that situation lots of times. The familiar and known mechanics "should" produce the same results as before, but when they don't - now there's added frustration, and flustering over what to do differently, which for me is a session-killer.

I think we can learn to get ourselves in the right frame of body & mind, without learning quite how we do it. Through practice and pleasure-feedback, maybe things that are invisible to our awareness can line themselves up.

As I mentioned in another thread, I used to be able to snap into a relaxed & focused state with no mind-noise... I've no idea how to do it now... but I didn't know how I did it then either. So where do you even start with that?

Posted by: @studmouse47

I had to stop in early June because I was becoming addicted. I couldn't go to bed at night unless I had something up my ass.

Yes, this can be a problem as I noted in the Introductory Message to New Members thread. I think @Clenchy has some insightful thoughts about this being a psychological issue.

Posted by: @studmouse47

After trying the things that used to start things rolling, little or nothing happened.

Worn out from trying to make things happen,
... I kept trying and again fell asleep.  

Sounds like you are "...trying..." too hard.

Posted by: @studmouse47

It seems as though suddenly stopping all anal / prostate play undid all of rewiring that I had done.

I doubt you've lost the ability, it may be that you have overcompensated by programming your self to avoid these orgasms from your concern about the addiction.

Posted by: @studmouse47

Has anyone else had this happen to them? Any suggestions as to to get it back would be helpful.

There have been reports of men going through periods of lackluster performance. Sometimes these can be related to physical conditions such as injuries or sickness but more frequently it occurs as a result of psychological issues such as increased stress at home or work, emotional trauma, changing living conditions, any of a myriad of upsetting conditions knocking us out of a peaceful, harmonious existence. I don't have a solid solution for your situation other than to suggest you go back to the basics of relaxing, having no expectations and enjoying being grateful for those sensations you do have. I suspect you are just going through a psychological lull as you adjust your mental outlook to a more integrated, balanced approach to your sexuality.

Good Vibes to You!

There can be some use it or lose to the journey,many guys have reported a few steps back after a period of abstinence. Get back to work and employ some discipline,pick days of the week to session and stick to them. Stop trying to make things happen and You’ll be fine.