It all depends on when Suzanne typically made the bed. Barry certainly didn't sleep that night, and Suzanne was alive the previous afternoon.
If she typically made the bed when she woke up, then she made this bed the previous day
If she ran into the bedroom when he was attempting to get in and busted the door down, then maybe the pillows got a bit tossed about during that time? He just tosses them back up on the bed however they fall.