Update time.
First, he is to big for your tank Mike and your Scopas may lay a beating on him/her.
So, after Mutt & Jeff, {my Kole & Yellow tangs}, spent a couple days in the 55g sump slammer, I moved them back today. The copperband has been in the main tank for almost two days, eating like crazy. Still not sure if its apitasia yet or just other worms.
Of course the rockwork is different, as it was removed to remove the tangs. So far, they are well behaved. The yellow is still a bit aggresive, {pig head}, but the copperband wont back down now. As a matter of fact, if the yellow is to aggressive, the copperband rolls over and waves is sharpe dorsel fins at the yellow. Pretty funny to watch.
All three seem to remember their recent chaotic and to them, life threatning events, for now.
Hope this evening it remains that way.
Tip on how to catch fish in a large tang. I have at least four sections of, 3in. pvc pipe, about 8in. to a ft. long. Its buried under the rock a bit, at the sides of the tank. Most fish and snails are in them at one time or another, but they are the main homes for my 3 percs. When trying to net the tangs and after removing some of their rock, they hide in the pipes. Put the net over one end and push the pipe up against the glass and voila.