Flame char the red chillies by placing them directly into the gas flame on your cooktop or into the flame on a barbecue. When the skin is blackened, remove and cool slightly, removing the stalk.
Place charred chillies, garlic, onion, chipotle chilli and sauce, oregano and oil into the Thermomix bowl and chop 3 seconds/speed 7. Don't remove the skin from the chillies, this is where the smoky flavour will come from.
Saute 6 min/Varoma/speed 1/MC off.
Add remaining ingredients and cook 45 min/80°C/Reverse/speed 1.
Drain off most of the liquid and reserve for another use.
Shred (or pull) the pork 4 sec/Reverse/ speed 4.