Found one solution.
Well it seemed just the cyclinder nurb locked up!! My head was still open for editing.
I was wondering if I accidentally pressed the wrong button some where.
I was just doing simple shape modifications, making a simple body. Scaling a bit here, pulling a few faces there. Just the average kind of shape adjutments.
Anyways, I reopened the project since I sayed it 5 minutes before and I can edit the shape again!!
So I'm ok for now!! Also wondering...what is the "insert button" on the keyboard. I was following that little Franky Modeling beginners tutorial (which I really enjoy. The guy did a great job), and he was duplicating the arm and "pressed Insert" on the keyboard. Though I don't know what that key is. Anybody know?
I press "I" but it didn't create a little circle "icon" on the screen like his did.