After finally getting my new GOSM, I decided to do a search (not even on this site) for Hawg Wings and saw this thread.
I first tried Hawg Wings a few years ago at the New England BBQ Championships. For those in the New England area who do not know, the Harpoon Brewery (both the one in Boston and the one in Vermont) hold the NE BBQ Championships every year in the summer and it is a lot of fun. Good food and good beer, you can't go wrong.
Anyway, getting back on track I have had these several times over the last few years at this event, and they are always the thing I go looking for first when I get there. I did ask the guy who cooks them, and they are a pork shank. When they are smoked, they are unbelievably good. They are some of the tastiest pieces of meat I have ever had and could easily gain a few hundred pounds if exposed to them on a regular basis.
Not sure if anyone has managed to get them retail other than Paula Dean. If you do, please let me know as I am dying to try smoking my own.