At First... they are not MY Players (like BB-Marin wrote it), it is another Team from my League where it happened.
Then, in that situation not only one Player was substituted, it was all 4 at the same Time. But I think, it was only ONE of the four Players who fell so deep in Rating that the Engine switched in another Modus. Which allowed it to Sub all Players, even if only one of them was really affected. And most of the Players of Gisorb Knicks are cheap Players.
But i am sure, BB-Marin will find a solution soon for this very rare and special Problem.