There is nothing wrong in channeling emotions like anger through workings etc. Just be careful about how you use those emotions as they can have a negative effect on you if done too often or in a wrong way. I would recommend venting your anger in RTR's, if there is anger towards specific people you can for example use intent & program energy to negatively impact the person in question, kinda like black magic but done in a simple manner. When you are done with the above, try to let that energy / anger go, you can always tune into that anger again when you want to keep cursing them or whatever your intentions are.
Cleaning goes a long way to keep yourself healthy, so always do an extra round of cleaning.