Buddhist view on letting the anger out. Any problems with that?

Many people claim they feel better, like a strong relief, after letting the anger out, so they scream at the open air or punch a sand sack. Of course I'm referring ONLY to cases where there is no other person involved, so I'm NOT talking about punching a person or yelling at someone! I know the Buddhist view on anger is to see it for what it is and let go of it, but some people see it as suppressing the anger and keeping it in, so they claim that letting it out is a better way to get rid of it. It works for them. So, is there anything wrong with that from a Buddhist's standpoint?