An AWOL set is just a set from an old skool nite from the early to mid night's from promoter AWOL - like $marty says, stands for Another Way Of Life (instead of the military equivalent of Absent With Out Leave).
If I remember right they used to do quite a few nights at the old Lid airport site before it was closed, think they've had a few 'revival' nites recently.
Used to be a time when AWOL record bags were as popular and more fashionable than the Slammin' record bags lol