When drugged with GHB can one ever remember what happened to them?

If someone was slipped GHB and they overdosed as a result (unresponsive, blacked out, seizures, near death) can the person ever regain memory of what happened to them?

: http://alcoholdrugstreatment.info/when-drugged-with-ghb-can-one-ever-remember-what-happened-to-them