It won't - will revert to emergency timetable - and they've already confirmed Falmer will be shut after 5pm 'for safety reasons' (for the Rotherham game - same timetable)
Yup, going to be horrendous....quicker to walk back to Lewes I reckon - it's about an hour and a bit to the station with brisk walking. It's going to be like this for evening games for the foreseeable future with basically no Falmer/Lewes train service after the game.