I'm back in business with this domain after cleaning the link profile (-1000 domains)
This is really interesting - because as far as I was aware, for the site to be hit by Penguin, or recover by Penguin, the Penguin update must run, and the latest Penguin run was on 4th October (Penguin 2.1).
So I guess it must be some other link based filter that you were hit with and from which you have recovered from by cleaning up your link profile.
I am wondering whether you could tell us more on what you did, for example, have you used Disavow file, have you submit reconsideration request, have you had any warning in WMT and how long did it take between cleaning your link profile and your recovery?
I think it would also be interesting to know what percentage of linking domains in your whole profile these 1000 domains make and whether these 1000 domains were linking to you for a while or was there a surge of new domains in your link profile that caused the fall on 27th November.