Hi C.!
I didn't know that it actually had a name "encopresis". WOW! I am relieved to know that they actually gave it a name because it's so popular :o)
When my son did this, I had thought he "relapsed" from being potty perfect. The only thing I could think of was ask him to help mommy clean him up. I thought due to his age, he could be "responsible" enough to help me if I guided him in a loving way like I did when i taught him how to get dressed long ago :O)
I made his bathroom equipped with everything we needed to do the job; wipee's, underpants, etc... and showed him how to do everything without flooding the toilet :O)
After 3 times of showing him, I told him that because he was a big boy, he could clean himself now, just please don't flush until mommy makes sure that the toilet is 'OK". I would check on him by asking him (through the closed door)if he was ok. He always said "yes" because he wanted to show me how big he was and didn't want to disappoint me. I just had to make certain that we didn't skip a bath that night :O)
I kept very patient and loving (and tried not to gag), because I didn't want to develope any more insecurities on his part. I was very nervous because he was going to start Kindergarten with this problem.
After he began to clean himself, the problem almost stopped completely, with only a few accidents between long spans of days. After he started Kindergarten, he would wait until he got home to "take care of business". Because as he began school, his body was able to establish a routine, just like a real big boy.
We never talked about it, other than I asked if he needed any help. He always said "NO I can do it", and he eventually stopped the problem, as I think he got tired of cleaning himself. But sometimes that how we all learn. We all figure out a way to do things 'easier" after we practice the hard way :o) I believe that this problem goes in that same category.
I would just try not to read too much into the whole thing. He's just trying to figure out how to be "big" by himself without any help from mommy. He'll figure it out quicker and without trauma if his mommy just gives him support and the ways to take care of himself.
I'm sure he'll be back to normal in no time.
~N. :O)