Help with tang and coral beauty please!!!

I have a 72 gallon bowfront with one true perc clown, a powder brown tang, a bynch of miscellanious inverts, and as of yesterday a coral beauty angel. The tang is being very violent with th coral beauty and i dont know what to do. I set up a peacemaker so that he coral beauty will at least be safe. Any oher ideas? Yes i know that a powder brown tang needs bigger than a 72 it is a baby and will only be staying in there for another 2 weeks or so while my 175 finishes cycling. Thanks in advance for any ideas!