Just toss an Atlantic Blue Tang and a Purple Tang in there with the mix, the rabbit will quit bugging the Naso
Kidding, I am just lucky to have a Naso, Atlantic blue, and a Purple Tang that are all buddies.
The time out trick works out very well. I have my rocks set up so it's just a giant never ending series of Caves so all the fish have space to get away from each other. Initally my purple Tang would chase my Atlantic Blue around non-stop to the point I thought I was going to loose the little guy. I was not happy with my rock work, so I rearranged it. The fish got "pre-occupied" checking out the new aquascaping that they ignored each other. Over the following 2.5 months of adjusting rocks to get them how I liked them my Atlantic Blue became best friends with my Naso. The Naso took it upon himself to be my Atlantic Blue's "Fish Body Guard"
My Naso, Big Al is the king of the tank. He swims around lazily like he is lost, if someone is bickering he just rolls on by and breaks them up.
Sorry for the ramble,
Basically I would rearrange your rock work every third day or so. If that doesn't work, yank out your Fox Face. Toss him in the sump for a time out for a few weeks and then let him back in with the rest of the crowd. If he doesn't calm down, the down time for your Naso should allow him to get his confidence up and will be able to put the fox face in his place, be his buddy or stay out of his little bubble.
BTW, what kind of setup to you have all your babies in?