Ya funny thing is I went to
http://www.studiocycles.com/ and emailed the two guys Jeff Wimmer and James Borghese about getting a manual for my Johnny G Spinner Home Edition bike. One email came back saying invalid email address and the other I haven't gotten a response from yet.
I have contacted spinner.com through the phone (does MDA own spinner.com?) the first time they sent me the wrong parts (pedals for crying out loud, I thought I made it really clear on what had broken, HAHAHAH that was funny when it came) now I'm waiting the part that suppose to be the right part. If its wrong I guess I'll have to call and ask for Blake.
If you check out the website it shows how to remove the "big black sprocket" from the Astabulas. I just need that funky looking tool