Whilst anything is possible I don't think goals for and against have been altered.
Checking my records over the last three seasons there is always a dip mid season.
As per my sig last three seasons GF 4.02 GA 0.37 per game
This season 28 games played GF 120. 4.28 GA 0.28 per game.
If anything it's the reverse.
Also my own stats tell me historically there is always a slump around game 22 and normally runs to game 30 ish, could be coincidence only time will tell.
Needless to say after the cup defeat of 0-2 and the 1-0 win that day, the previous days 2-1 win maybe I should have seen it coming so I've gone normal mentality for a few days, we'll see how it goes from there, attack is a definite no! for me at the moment.