jc, maybe if you wait a few days and let the other fish establish their territories, you can add the yellow back in. Im sure he will calm down eventually (well of course I am not SURE, but chances are good.) Especially if he wasnt too hard to catch, then if it didnt work out you can remove him again. My yellow has bullied new additions but hasnt killed anyone and has settled down within 48 hours.

My particular yellow wont eat chaeto, and neither will the foxface. I guess each fish like each human has different tastes!