You are all seem to be rather confused on this issue.
Teary refers to apostates in sociological terms. Those who leave a group and then move on with their lives and believe nothing else afterwards would not qualify as "apostates." An apostate is one who leaves a group and then takes an active and aggressive stand against his former affiliation. Apostates normally make up between 15%-20% of leave takers from NRM's, even with regards what some consider to be 'high-control' groups.
There has also been evidence documented that many apostates of NRMs only develop the apostate traits (anger with their former group, obsession with "taking them down" or "proving them wrong," retelling of the classic atrocity narrative, ect.) AFTER coming into contact with the subversive anti-cult groups. And it is these anti-cult groups that Teary refers to when he says that apostates simply "switch" to another form of indoctrination (not necessarily religious indoctrination, but more group/social indoctrination).