Good grief man read it again. If you feel the urge to copy and paste the order of terms to reverse the meaning I would caution you against it.
He follows Gods words, not John N. Darby or Adulterer C.I. Scofield, in their deception known as Dispensationalism
The falling away happens first and then the man of sin is revealed. The falling away is a prerequisite to the man of sin being revealed.