In a bowl, put the pork with the oranges juices.
In the blender put the axiote paste, 1/2 cup of vinegar, 1/2 cup of water, 2 garlics, 1/4 onion. Blend well and add the mix into the pork. Leave the meat overnight. Then cook for 30 min on high temperature in the pressure cooker. Shred after that.
Slice the onion very thin, add the lime juice, 2 tbls spoons of vinegar and ground oregano. Mix well and serve on top or use as a side. You could made soft tacos or crispy tacos with this meat