Still moving names to Namecheap from GoDaddy on a monthly basis, but because of a change made to contact details, I was unable to move one. I had to renew it at GoDaddy and found the code above worked today and got me 35% off.
I'm moving over to name.com, not the cheapest but the customer support and ethics suit me. I'm making a point to tweet and tag godaddy and name.com every time I move a batch of names, see if godaddy get the hint. I only have about 50 or so left.
I have a few I can't move too, where I removed privacy only for it to lock it :/, I'll keep this handy for next time