This is so easy in the crock pot and fall apart delicious! I am including the recipe as a whole, however if you want to make it Paleo (I did) just omit the items in italics.
1 6-8 lb pork shoulder or butt roast
3 T onion powder
2T brown sugar
1/2 tsp of salt and pepper
8-10oz cider vinegar (** I substitute organ apple cider for the vinegar)
6 t worcestershire
1 t dry mustard
1 t garlic salt or powder
1/2 t sugar
1/2 + t cayenne red pepper
Rinse and pat dry pork. Mix ingredients in part 1 and rub over the entire pork roast.
Place in the crock pot on high for 6-7 hours.
Mix together ingredients in part 2 and add to crock pot. Put the crock pot on low for 10-11 hours.
When pork is very tender, with a fork, remove roast from crock pot.
Chop or pull roast very fine (basically as much as you can cut it with a sharp knife and fork.
Take a Tablespoon and ingredients from part 2 (bbq sauce ingredients) and apply over the chopped or pulled meat.