Jay,
I am not 100% sure it wasn't enhanced - but I really don't think it was. FYI - they sat for about 30 minutes while I prepped the WSM. I used Kosher Salt. Now that I take into account your info, I probably oversalted and let it sit for too long.
In regard to the hard comment, I really meant a bit harder than the original cook. They were extremely soft. EXTREMELY. Also, they were awesome. Maybe I am just surprised at how great they came out while being so tender. Ah, the beauties of a smoker.
Also, it took barely over two hours to hit 156 internally. (Average temp of 275 @ top of smoker) I would recommend this as a perfect same day option.
Thanks!