Sorry to hear about your fish. I hope the foxface pulls through too -- they are much hardier than the tang, so keep your head up.
Unfortunately, I do not believe the foxface made it. I haven't seen him in over a week and all my cleaner crew are running around fat and happy. That's $100 or so in two fish. THAT SUCKS. I now have a quarintine tank for treatment when I want to replace them. Now If I only had the money. I bought them at THAT FISH PLACE in Lancaster PA. After talking to them about it, the fish survived long enough to void their warranty. Never buying fish from them again. Other than my Chromis, I have bought all of my fish from another LFS and had great results. Treasures from the Sea.