Yeah, the ones who were stilled, 3 of them I believe, were healed by an As'hman or whatever. Completely healed to their original strength where as Nynaeve only heals to their partial strength.
Do you ever have those moments when you're re-reading and something just clicks and you have an "Ah ha!" moment? Yeah. I had that. I was reading book 8-9 and remembering that a certain Blue was free of the oaths after younglings helped out, and then realized the Sisters Who took the bull to...