My theory is much simpler but I have many examples from my personal experience: the game does whatever it can to prevent you from winning the treble! I faced 5 unexpected failures this year - all based on the same pattern: Win every single match until you reach cup/CL semis. And then comes this manager that will be impossible to beat in spite of the fact that he does not attend the match and he is 30% weaker than you. I am in the same situation this season and I can feel it coming. I already spotted who's gonna be my nightmare! See you in 2 weeks!!