DERAILER, a type of phrase in an engram which throws the preclear “off the track” and makes him lose touch with his time track. This is a very serious phrase since it can make a schizophrenic and something of this sort is always to be found in schizophrenia. Some of its phrases throw him into other valences which have no proper track, some merely remove time, some throw him bodily out of time. “I don’t have any time” is a derailer. “I’m beside myself” means that he is now two people, one beside the other. “I’ll have to pretend I am somebody else” is a key phrase to identity confusion, and many more. (DMSMH, p. 335)
Hubbard, L. R., (1975) Dianetics and Scientology Technical Dictionary. Los Angeles: Church of Scientology of California Publications Organization.