Been there before. When that happens, or when you just need the meat to hurry the hell up, I always Texas Crutch it: double wrap in a tight foil pouch with a little liquid in there. Will get done fast and be super tender.
Only pic is an in-process image. So tired I didn't get the final product. That's what happens when you sit 5 hours on a hard pew waiting for the train and then another 17 hours bouncing around in coach.
I smoked the chuck roast and ham for about 3 hours then wrapped and placed in a 225 oven until dinner time. Everybody raved about the chuck roast and the ham is always good.