Spray and ridged grill pan with Pam and put it on a burner set on medium high heat. Add pork and grill until browned on all sides. Let cool and then cut into chunks (original recipe said 3/4 inch pieces but know mine were closer to 2-3 inches).
Put pork along with next 3 ingredients (bq sauce - chili powder) in a crockpot. And cook on low for 6-8 hours.
Shred meat with fork.
Place 1/4 cup coleslaw (more or less - no points in coleslaw mix) on bottom of pan and top with 1/2 cup pork mixture and top with top bun.