I know this is old. And you may never receive this message. But just in case…
I read your post over at stack, and I saw it was closed for a stupid reason back then.
The thing is – I am trying to do exactly what you are talking about.
Everything looks almost good with the code you pasted on stackexchange, but of course the forum which contains subforums doesn’t work as it should..
If you got this to work, and you still have the code. Can I please ask if you can post it here?
I believe the only thing I need is the code for loop-forums.php.
Thanks.