They won the division in 2017 by 21 games, so I'm pretty sure there were many games in the second half of the year where they played it straight. In other words, those home/road splits lose a lot their value because of this. Doesn't take a genius to realize if you are cheating like this, make sure if sparse enough to help avoid detection.
And also, who cares. If they cheated in just one game, its still wrong. So what's the point of your stats? That they cheated and sucked at it?