For as much crap as Bombay put the team through, they were forgiving
In the first movie, Bombay pretty much hated the kids and taught them how to cheat. It was Hans who helped Bombay get his priorites straight before he started treating the team better and they forgave him.
Then in this movie, he again lost sight of what's important and pretty much ran the kids ragged, causing them to fall asleep in class and put a lot of pressure on them to win. But yet again, they forgave them. They were a very dedicated team who got through hard times very well. Bombay was lucky to have them and their forgiving dedication.