I agree that TB's really are not as bad as advertised, if you keep them with proper tank mates and numbers. Eventually they will establish their hierarchy and the top TB will be challenged from time to time. The flip side is the low man on the totem pole ... usually that TB is the smallest and may become the most bullied.
I think that's what has happened with my "smallest" TB, a male Albino that was there from day one. It always challenged the other males, but about 3 weeks month ago it started to hide under a piece of DW. This barb was always out in the open, very active. 3 weeks ago was also when it got into it's last fight with another male.
Kinda sad to see such an active male TB now reduced to a inactive fish. A week ago I put it in my son's 10gal and it became more active after a few days. This past Sunday I put it back in the main tank since I was getting tetras for the 10gal. By the Sunday night I had to put it back in the 10 gal with it's new neon tetra tank mates, where it's going to stay from now on.