In a bizarre all or nothing season, Berrios has actually been pitching well of late. I think he's always been slow to adapt. Remember his horrendous intro to the majors?
This time, he's had to adjust to a new team for the first time, AND a new country, with the pressure of living up to his contract. In the long run, the Jays may yet be pleased with the outcome of this trade.
I don't know if Berrios spends the off season in Puerto Rico, but Toronto winters, where I live, are probably quite similar to Minneapolis?