After the FBI raids of July 1977, Hubbard had a physical and emotional breakdown, with a time delay similar to his 1967 breakdown after his failure to "take Southern Africa," into which he had confidently strode, thinking he had been Cecil Rhodes in his last life. He ended up in Northern Africa, lying in bed, popping pills, and going on about his 2nd wife whom he hadn't seen in almost 20 years.
From this came the Commodore, the Sea Org, Xenu and Incident 2. These were Hubbard's solutions to his problem of having failed in the quest to "take Southern Africa" as the new base for Scientology, a place where he would be hailed as the Great Man and the Word of the New Eon.
Obviously, only a super-engram, one affecting a large part of the galaxy, would be necessary to explain such a failure.
Jump ahead ten years. 1977, and then 1978. More upsets for Hubbard, another breakdown, and this time he begins to regress - not to being "The Commodore" (whoever that was), but to re-emphasis on Dianetics as making Clears, and even on himself as a Science Fiction author. It was 1949 again.
Once again, Hubbard burped, and all of Scientology got gas.
IMO, if Dianetic Clear (meaning Clears from Book One or from old R3R/Standard Dianetics) were so impressive, and so often-occurring, it would have been noticeable without Hubbard's legacy/identity-crisis-motivated & money-motivated "discovery" of 1978.
I don't recall one person receiving Dianetic R3R (pre-1978) who thought, "I'm mocking up my own reactive mind," but there were people who did the Clearing Procedure of the mid/late 1950s who thought this, and, after leaving Scientology, I audited someone on a discontinued procedure from around 1957/58, that addressed identities and help, and that resulted in a major and dramatic shift for the better, and the person felt he had "gone Clear," but Dianetics?
Anyway, as the saga continues, Hubbard decided there were lots of Dianetic Clears, and even a few Natural Clears, and also announced that keyed-out Clear is Clear, and that Clears should skip PP, R6ew, and CC and go straight to their "OT" levels (thus allowing Scientologists to skip the boring stuff and go directly to the thrill ride of "OT.") And many Scientologists responded like tightly-wound-up puppets.
Various things - in auditing - can bring a person to a Clear or Clear-like state, and Dianetics is probably one of the least likely procedures for accomplishing that, IMHO, but it was hyped like crazy, and Hubbard made millions (for his monuments-to-himself-projects) from "running" people "up lines" to their "OT levels," and lots of review and repair auditing "up lines" (and away from those darned Missions). He messed with a lot of people's bank accounts, their families, their lives, and their futures, and promised them quickie "Clear," then told them they were "at risk," and then promised them Freedom from Overwhelm on OT 3, and then told them they had something called NOTs case, which, if not addressed (and it would take "years" and lots more $$$, see 'From Clear to Eternity'), would suck them into the dwindling spiral for sure.
And "Flag" made a lot of money.
How are these people doing today? The ones who took the "rocket ride" by way of Dianetic Clear to the OT levels (and lots of expensive Review auditing), and then years of NOTs?
Are they OT?
The whole Dianetic Clear matter was and is a shameful fiasco.
That's when I realized that Hubbard was doing something else, and that Scientology - as an operation - wasn't primarily about the "auditing tech" (in a benign sense), but primarily about other things.