I, too, spent a long time getting it free. JUST as I got it free, the "top" broke off. I was able to glue it on, but it was pretty dismal. My printer is decent if not quite 100%, but I rarely have trouble with "challenge" prints.
I would suggest creating a manual support for the print-in-place one. Get something that works and post it so you're not counting on the end-user's slicer to do the supports right. Could you show a picture of this already sliced, so we can see the supports you print with?
I really like the idea and enjoyed playing with it. I will try the new looser version in the meantime. I would do the multi-print version but I don't yet understand how it goes together.
Again, thanks for the cool design, I'm watching this one!