who's training who?

So, I had planned this post in my head today, and then this evening, something amazing happened that made me totally rethink what I had planned to say. 
The original post was something like this;
I have been working on getting Jackson to use the potty for the last month.  It has been a difficult journey because he's a very stubborn kid, and I could barely even get him to sit on the potty, let alone use the darn thing for a long time.  I tried every bribe I could think of to get him to sit on it to see it wasn't really scary like he tried to make me believe it was, but as with everything in Jackson's world, we had to wait for him to do it in his own time.  He finally made it past being afraid of the potty, but was still very reluctant to use it.  For a couple weeks I cleaned up a lot of puddles, but I decided to stick with it, but also not be a Hitler about it.  I would offer at certain times (when he got up, before and after meals, before and after naps, etc.), and if he would try that was great, and if not, that was ok too.  I know the experts would say the laid back approach is all wrong, but with Jackson, pressing the issue just wasn't going to work, and backing off completely would have meant he would go to kindergarten in diapers.
So, little by little, Jackson has gotten to the point that he has not worn any diapers, or had any accidents in the past week, but we have a problem.  He never tells me when he needs to potty, he just waits around, and stays dry, until I take him at those normal times.  He even stays dry overnight, which is a long time, but I just can't get him to ever tell me he needs to potty.
Here is the crazy thing; I was going to ask if I should just keep doing what we are doing, or if I need to do something differently to get him to the point that he tells me, but this afternoon, Jackson came upstairs, went into the bathroom, and took himself potty.  I heard him in there and asked what he was doing and he told me "I'm going poop!"  Boy, was I excited.  I know that is the craziest thing to be excited about, but I was really stressing that I had done something wrong and that Jackson wasn't really potty trained.  I felt like I had just trained myself to take him potty and he didn't really get it.  Thank the Lord that things seem to be changing.  Fingers crossed this trend continues with Jackson and I will only have one more kid to get through potty training.