After a week or so of him trying to attack the others through your "fence". Release him into the general population. I know it will be hard to watch him go after the others, but if the others are up to par, they will just tuck themselves in. YOU HAVE TO WATCH!. After a while, He will just tire out and learn to accept the fact that he is not the only male. If your other ones are not up to par, they "may" get nipped. Just Watch. I have quite a few males in my colony & had some real terror males. (I posted a pic of one that I have on another board.) The only thing I do worry about are the number of males to the one female. That situation you DEFINITELY have to watch. It can come to the point that the males could literally harass the female to death. You may have to separate the female from all those males. Personally, I do not even like 1:1 ratio. Anyway, good luck.