So I thought to myself: "Creating ragdolls in actionscript is sooo lame. Oh hey, I'll create an editor for it". And so I did. The editor is fairly straightforward and there aren't any keyboard shortcuts to keep in mind. Just click the edit ragdoll button and you can create and delete limbs as you choose. You can create all kinds of ragdolls, from simple flails to all kinds of creatures and whatnot.
The physics have also been somewhat improved from the last version.
Edit: Check out [link]
for the latest version of this editor.