I don't have a team failure story, but I do have a good team success story. The team consisted of four cave divers on a trip to Akumal. Two were photographers with cameras and strobes. The third carried a slave strobe and I served as main navigator and model.
After a couple of dives together, we found a smooth rhythm. Since I was unencumbered with extra gear to hold onto, I'd run the lines, then step out of the way for the slave strobe guy who would be followed by the photographers. After a few shots, I'd move over to whatever they were focused on, pose for pics. Often, I'd return to the front to run the lines for jumps, then return to the back. At the end, I was at the back, reeling up our lines.
The photographers would not have been able to get the great shots they did if they had to run all their lines too, and I would have missed out on a TON of great pictures (many of me!) that they shared.