Yeah, I think Smoke Tex Ring is right........ you went too far on the initial cook. A shade over 190 is when I like to wrap it up. 208 is a bit high. Also, I don't quite get how you got 180 after putting it in a 225 oven for an hour after it was 208 ??? Anyway, she should still be tender, though a bit dry, so just let it simmer in your favorite thin sauce and she'll be good eatin'. I don't know how many briskets you've done, but what you have there looks pretty good. Ain't the easiest piece of meat to master.